Jerusalem in the context of Urban II

Jewish Christians were the followers of a Jewish religious sect that emerged in Roman Judea during the late Second Temple period, under the Herodian tetrarchy (1st century AD). These Jews believed that Jesus was the prophesied Messiah and they continued their adherence to Jewish law. Jewish Christianity is the historical foundation of Early Christianity, which later developed into Nicene Christianity (which comprises the Roman Catholic, Eastern Orthodox, Oriental Orthodox, and Protestant traditions) and other Christian denominations.

Christianity started with Jewish eschatological expectations, and it developed into the worship of Jesus as the result of his earthly ministry in Galilee and Jerusalem, his crucifixion, and the post-resurrection experiences of his followers. Jewish Christians drifted apart from Second Temple Judaism, and their form of Judaism eventually became a minority strand within mainstream Judaism, as it had almost disappeared by the 5th century AD. Jewish–Christian gospels are lost except for fragments, so there is a considerable amount of uncertainty about the scriptures which were used by this group of Christians.

Israel, officially the State of Israel, is a country in the Southern Levant region of West Asia. It borders Lebanon to the north, Syria to the northeast, Jordan to the east and Egypt to the southwest. Israel occupies the Palestinian territories of the West Bank in the east and the Gaza Strip in the southwest, as well as the Syrian Golan Heights in the northeast. Israel's western coast lies on the Mediterranean Sea, the southern tip reaches the Red Sea, and the east includes the Earth's lowest point near the Dead Sea. Jerusalem is the government seat and proclaimed capital, while Tel Aviv is Israel's largest urban area and economic centre.

The Land of Israel is synonymous with Palestine or the Holy Land. In antiquity it was home to the Canaanites and later the kingdoms of Israel and Judah. Its location at a continental crossroads brought demographic shifts under various empires. Nineteenth-century European antisemitism fuelled the Zionist movement for a Jewish homeland. Britain endorsed this goal in the 1917 Balfour Declaration and ruled Mandatory Palestine from 1920. Jewish immigration and British policies intensified Arab-Jewish tensions, and the 1947 United Nations (UN) Partition Plan led to a civil war.

Palestine, officially the State of Palestine, is a country in West Asia. It encompasses the Israeli-occupied West Bank, including East Jerusalem, and the Gaza Strip, collectively known as the Palestinian territories. The territories share the vast majority of their borders with Israel, with the West Bank bordering Jordan to the east and the Gaza Strip bordering Egypt to the southwest. It has a total land area of 6,020 square kilometres (2,320 sq mi) while its population exceeds five million. Its proclaimed capital is Jerusalem, while Ramallah serves as its de facto administrative center. Gaza was its largest city prior to evacuations in 2023.

Situated at a continental crossroad, the Palestine region was ruled by various empires and experienced various demographic changes from antiquity to the modern era. It was treading ground for the Nile and Mesopotamian armies and merchants from North Africa, China and India. The region has religious significance. The ongoing Israeli–Palestinian conflict dates back to the rise of the Zionist movement, supported by the United Kingdom during World War I. The war saw Britain occupying Palestine from the Ottoman Empire, where it set up Mandatory Palestine under the auspices of the League of Nations. Increased Jewish immigration led to intercommunal conflict between Jews and Palestinian Arabs, which escalated into a civil war in 1947 after a proposed partitioning by the United Nations was rejected by the Palestinians and other Arab nations.

Mary was a first-century Jewish woman of Nazareth, the wife of Joseph and the mother of Jesus. She is an important figure of Christianity, venerated under various titles such as virgin or queen, many of them mentioned in the Litany of Loreto. The Eastern and Oriental Orthodox, Catholic, Evangelical Lutheran, Reformed, Anglican, Methodist and Baptist churches believe that Mary, as mother of Jesus, is the Mother of God. The Church of the East historically regarded her as Christotokos, a term still used in Assyrian Church of the East liturgy. She has the highest position in Islam among all women and is mentioned numerous times in the Quran, including in a chapter named after her. She is also revered in the Baháʼí Faith and the Druze Faith.

The synoptic Gospels name Mary as the mother of Jesus. The gospels of Matthew and Luke describe Mary as a virgin who was chosen by God to conceive Jesus through the Holy Spirit. After giving birth to Jesus in Bethlehem, she and her husband Joseph raised him in the city of Nazareth in Galilee, and she was in Jerusalem at his crucifixion and with the apostles after his ascension. Although her later life is not accounted in the Bible; Catholic, Eastern Orthodox, and some Protestant traditions believe that her body was raised into heaven at the end of her earthly life, which is known in Western Christianity as the Assumption of Mary and in Eastern Christianity as the Dormition of the Mother of God.

Islam is an Abrahamic monotheistic religion based on the Quran and the teachings of Muhammad. Adherents of Islam are called Muslims, who are estimated to number 2 billion worldwide and are the world's second-largest religious population, after Christianity.

Muslims believe that there is a primordial faith that was revealed many times through earlier prophets and messengers, including Adam, Noah, Abraham, Moses, and Jesus, and they believe that Islam is the universal and complete version of this faith. Muslims consider the Quran to be the verbatim word of God and the unaltered, final revelation. Alongside the Quran, Muslims also believe in previous revelations, such as the Tawrat (the Torah), the Zabur (Psalms), and the Injil (Gospel). They believe that Muhammad is the main and final of God's prophets, through whom the religion was completed. The teachings and normative examples of Muhammad, called the Sunnah, documented in accounts called the hadith, provide a constitutional model for Muslims. Islam is based on the belief in the oneness and uniqueness of God (tawhid), and belief in an afterlife (akhirah) with the Last Judgment—wherein the righteous will be rewarded in paradise (jannah) and the unrighteous will be punished in hell (jahannam). The Five Pillars, considered obligatory acts of worship, are the Islamic oath and creed (shahada), daily prayers (salah), almsgiving (zakat), fasting (sawm) in the month of Ramadan, and a pilgrimage (hajj) to Mecca. Islamic law, sharia, touches on virtually every aspect of life, from banking and finance and welfare to men's and women's roles and the environment. The two main religious festivals are Eid al-Fitr and Eid al-Adha. The three holiest sites in Islam are Masjid al-Haram in Mecca, Prophet's Mosque in Medina, and al-Aqsa Mosque in Jerusalem.

Richard I (8 September 1157 – 6 April 1199), known as Richard the Lionheart or Richard Cœur de Lion (Old Norman French: Quor de Lion) because of his reputation as a great military leader and warrior, was King of England from 1189 until his death in 1199. He also ruled as Duke of Normandy, Aquitaine, and Gascony; Lord of Cyprus; Count of Poitiers, Anjou, Maine, and Nantes; and was overlord of Brittany at various times during the same period. He was the third of five sons of Henry II of England and Eleanor of Aquitaine and was therefore not expected to become king, but his two elder brothers predeceased their father.

By the age of 16, Richard had taken command of his own army, putting down rebellions in Poitou against his father. Richard was an important Christian commander during the Third Crusade, leading the campaign after the departure of Philip II of France. Despite achieving several victories against his Muslim counterpart, Saladin, he was ultimately forced to end his campaign without retaking Jerusalem.

31°30′27″N 34°27′35″E / 31.50750°N 34.45972°E / 31.50750; 34.45972

Gaza City, often simply called Gaza, is a city in the Gaza Strip, Palestine, and the capital of the Gaza Governorate. Located on the Mediterranean coast, 76.6 kilometres (47.6 mi) southwest of Jerusalem, it was home to Palestine's only port. With a population of 590,481 people as of 2017, Gaza City was the most populous city in Palestine until the Gaza war caused most of the population to be displaced.

Jesus (c. 6 to 4 BC – AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many other names and titles, was a 1st-century Jewish preacher and religious leader in the Roman province of Judaea. He is the central figure of Christianity, the world's largest religion. Most Christians consider Jesus to be the incarnation of God the Son and awaited messiah, or Christ, a descendant from the Davidic line that is prophesied in the Old Testament. Virtually all modern scholars of antiquity agree that Jesus existed historically. Accounts of Jesus's life are contained in the Gospels, especially the four canonical Gospels in the New Testament. Since the Enlightenment, academic research has yielded various views on the historical reliability of the Gospels and how closely they reflect the historical Jesus.

According to Christian tradition, as preserved in the Gospels and the Acts of the Apostles, Jesus was circumcised at eight days old, was baptized by John the Baptist as a young adult, and after 40 days and nights of fasting in the wilderness, began his own ministry. He was an itinerant teacher who interpreted the law of God with divine authority and was often referred to as "rabbi". Jesus often debated with his fellow Jews on how to best follow God, engaged in healings, taught in parables, and gathered followers, among whom 12 were appointed as his apostles. He was arrested in Jerusalem and tried by the Jewish authorities, handed over to the Roman government, and crucified on the order of Pontius Pilate, the Roman prefect of Judaea. After his death, his followers became convinced that he rose from the dead, and following his ascension, the community they formed eventually became the early Christian Church that expanded as a worldwide movement.

Judaea was a Roman province from 6 to 135 AD, which at its height encompassed the regions of Judea, Idumea, Peraea, Samaria, and Galilee, as well as parts of the coastal plain of the southern Levant. At its height, it encompassed much of the core territories of the former Kingdom of Judaea, which had been ruled by the Hasmonean and Herodian dynasties in previous decades. The name Judaea (like the similar Judea) derives from the Iron Age Kingdom of Judah, which was centered in the region of Judea.

Since the Roman Republic's conquest of Judaea in 63 BC, which abolished the independent Hasmonean monarchy, Rome maintained a system of semi-autonomous vassalage in the region. After Hasmonean ruler Antigonus II Mattathias briefly regained the throne, he was overthrown by Herod, who was appointed King of the Jews by the Roman Senate and ruled Judaea until his death in 4 BC. The province's formal incorporation into the Roman Empire was enacted by Augustus in 6 AD following an appeal by the populace against the misrule of Herod's son, Herod Archelaus (r. 4 BC – 6 Anno Domini Nostri). The administrative capital was relocated from Jerusalem to the coastal city of Caesarea Maritima.

The history of ancient Israel and Judah spans from the early appearance of the Israelites in Canaan's hill country during the late second millennium BCE, to the establishment and subsequent downfall of the two Israelite kingdoms in the mid-first millennium BCE. This history unfolds within the Southern Levant during the Iron Age. The earliest documented mention of "Israel" as a people appears on the Merneptah Stele, an ancient Egyptian inscription dating back to around 1208 BCE. Archaeological evidence suggests that ancient Israelite culture evolved from the pre-existing Canaanite civilization. During the Iron Age II period, two Israelite kingdoms emerged, covering much of Canaan: the Kingdom of Israel in the north and the Kingdom of Judah in the south.

According to the Hebrew Bible, a "United Monarchy" consisting of Israel and Judah existed as early as the 11th century BCE, under the reigns of Saul, David, and Solomon; the great kingdom later was separated into two smaller kingdoms: Israel, containing the cities of Shechem and Samaria, in the north, and Judah, containing Jerusalem and Solomon's Temple, in the south. The historicity of the United Monarchy is debated—as there are no archaeological remains of it that are accepted as consensus—but historians and archaeologists agree that Israel and Judah existed as separate kingdoms by c. 900 BCE and c. 850 BCE, respectively. The kingdoms' history is known in greater detail than that of other kingdoms in the Levant, primarily due to the selective narratives in the Books of Samuel, Kings, and Chronicles, which were included in the Bible.

Jerusalem during the Second Temple period describes the history of the city during the existence there of the Second Temple, from the return to Zion under Cyrus the Great (c. 538 BCE) to the siege and destruction of the city by Titus during the First Jewish–Roman War in 70 CE. During this period, which saw the region and city change hands several times, Jerusalem was the center of religious life for all Jews; even those who lived in the diaspora prayed towards Jerusalem on a daily basis and went there on pilgrimage during three annual religious festivals. Under Hasmonean and Herodian rule, Jerusalem served as a royal capital and the seat of all major national institutions. In Jerusalem, the Pharisees of Second Temple Judaism developed into the Tannaim and Judaism's post-Exilic religious identity as it continues today, and the Hebrew Bible was perhaps canonized, although exactly when this occurred remains disputed. It was also in Jerusalem during the later stages of this period that Christianity was born.

The 600 years of the Second Temple period can be divided into several periods, each with its own distinct political and social characteristics. The physical development of the city was greatly affected by the changing characteristics of each era, while at the same time influencing these periods themselves. The city's population was characterized by social stratification, both economic and religious, which grew more pronounced over the years. There existed in the city, for example, a clear distinction between a rich and cosmopolitan elite and the wider population wishing less influence in the nation's ways from the outside world. Social strata also encompassed different religious outlooks, each with its different emphasis: some reliant on the Temple priests, while the majority were led by traditional non-priestly families, emphasizing the world of Torah study and the development of law over the formal hierarchy established in the Temple.

The Second Temple period or post-exilic period in Jewish history denotes the approximately 600 years (516 BCE – 70 CE) during which the Second Temple stood in the city of Jerusalem. It began with the return to Zion after the Babylonian captivity and the subsequent reconstruction of the Temple in Jerusalem, and ended with the First Jewish–Roman War and the Roman siege of Jerusalem.

In 587/586 BCE, the Neo-Babylonian Empire conquered the Kingdom of Judah; the Judeans lost their independence upon the Babylonian siege of Jerusalem, during which the First Temple was destroyed. After the Babylonians annexed Judah as a province, part of the subjugated populace was exiled to Babylon. This exilic period lasted for nearly five decades, ending after the Neo-Babylonian Empire itself was conquered by the Achaemenid Persian Empire, which annexed Babylonian territorial possessions after the fall of Babylon. Soon after the conquest, Persian king Cyrus the Great issued a proclamation known as the Edict of Cyrus, encouraging the exiles to return to their homeland after the Persians raised it as an autonomous Jewish-governed province. Under the Persians (c. 539–332 BCE), the returned Jewish population restored the city and rebuilt the Temple in Jerusalem. In 332 BCE, the Achaemenid Empire fell to Alexander the Great, and the region was later incorporated into the Ptolemaic Kingdom (c. 301–200 BCE) and the Seleucid Empire (c. 200–167 BCE).

The Herodian tetrarchy was a regional division of a client state of Rome, formed following the death of Herod the Great in 4 BCE. The client kingdom was divided between Herod's sister Salome I and his sons Herod Archelaus, Herod Antipas, and Philip. Upon the deposition of Herod Archelaus in 6 CE, his territories were transformed into a Roman province. With the death of Salome I in 10 CE, her domain was also incorporated into a province.

Other parts of the Herodian tetrarchy continued to function under Herodians. Philip ruled over territories north and east of the Jordan River until 34 CE. His domain was later incorporated into the Province of Syria. Herod Antipas ruled Galilee and Perea until 39 CE. The last notable Herodian ruler with some level of independence was King Herod Agrippa I. He was given the territory of Judea with its capital Jerusalem. With his death in 44 CE, the provincial status of Judea was restored for good.

Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in the Eastern Mediterranean region or locations further east, south or north. The term does not describe a single communion or religious denomination. Eastern Christianity is a category distinguished from Western Christianity, which is composed of those Christian traditions and churches that originally developed further west.

Major Eastern Christian bodies include the Eastern Orthodox Church and the Oriental Orthodox Churches, along with those groups descended from the historic Church of the East (also called the Assyrian Church), as well as the Eastern Catholic Churches (which are in communion with Rome while maintaining Eastern liturgies), and the Eastern Protestant churches. Most Eastern churches do not normally refer to themselves as "Eastern", with the exception of the Assyrian Church of the East and its offshoot, the Ancient Church of the East.

The Latin Empire, also referred to as the Latin Empire of Constantinople or the Constantinopolitan Empire, was a feudal Crusader state founded by the leaders of the Fourth Crusade on lands captured from the Byzantine Empire. The Latin Empire was intended to replace the Byzantine Empire as the Western-recognized Roman Empire in the east, with a Catholic emperor enthroned in place of the Eastern Orthodox Roman emperors. The main objective to form a Latin Empire was planned over the course of the Fourth Crusade, promoted by crusade leaders such as Boniface I of Montferrat, as well as the Republic of Venice.

The Fourth Crusade had originally been called to retake the Muslim-controlled city of Jerusalem, but a sequence of economic and political events culminated in the Crusader army sacking the city of Constantinople, the capital of the Byzantine Empire. Originally, the plan had been to restore the deposed Byzantine Emperor Isaac II Angelos, who had been usurped by Alexios III Angelos, to the throne. The crusaders had been promised financial and military aid by Isaac's son Alexios IV, with which they had planned to continue to Jerusalem. When the crusaders reached Constantinople, the situation quickly turned volatile, and while Isaac and Alexios briefly ruled, the crusaders did not receive the payment they had hoped for. In April 1204, they captured and plundered the city's enormous wealth.

In Christian tradition, the True Cross is the original wooden cross on which Jesus of Nazareth was crucified.

It is related by numerous historical accounts and legends that Helen, the mother of Roman emperor Constantine the Great, recovered the True Cross at the Holy Sepulchre in Jerusalem, when she travelled to the Holy Land in the years 326–328. The late fourth-century historians Gelasius of Caesarea and Tyrannius Rufinus wrote that while Helen was there, she discovered the hiding place of three crosses that were believed to have been used at the crucifixion of Jesus and the two thieves, Dismas and Gestas, who were executed with him. To one cross was affixed the titulus bearing Jesus' name, but according to Rufinus, Helen was unsure of its legitimacy until a miracle revealed that it was the True Cross. This event is celebrated on the liturgical calendar as the Feast of the Exaltation of the Cross (Roodmas) by the Oriental Orthodox, Eastern Orthodox, Persian, Roman Catholic, Lutheran, and Anglican churches.