Mitzvah in the context of "Amidah"

Halakha (/hɑːˈlɔːxə/ hah-LAW-khə; Hebrew: הֲלָכָה, romanized: hălāḵā, Sephardic: [halaˈχa]), is the collective body of Jewish religious laws that are derived from the Written and Oral Torah. Halakha is based on biblical commandments (mitzvot), subsequent Talmudic and rabbinic laws, and the customs and traditions which were compiled in the many books such as the Shulchan Aruch or Mishneh Torah. Halakha is often translated as "Jewish law", although a more literal translation might be "the way to go" or "the way of walking". The word is derived from the root ה–ל–כ, which refers to concepts related to "to go", "to walk". Halakha not only guides religious practices and beliefs; it also guides numerous aspects of day-to-day life.

Historically, widespread observance of the laws of the Torah is first in evidence beginning in the second century BCE, and some say that the first evidence was even earlier. In the Jewish diaspora, halakha served many Jewish communities as an enforceable avenue of law — both civil and religious, since no differentiation of them exists in classical Judaism. Since the Jewish Enlightenment (Haskalah) and Jewish emancipation, some have come to view the halakha as less binding in day-to-day life, because it relies on rabbinic interpretation, as opposed to the authoritative, canonical text which is recorded in the Hebrew Bible. Under contemporary Israeli law, certain areas of Israeli family and personal status law are, for Jews, under the authority of the rabbinic courts, so they are treated according to halakha. Some minor differences in halakha are found among Ashkenazi Jews, Mizrahi Jews, Sephardi Jews, Yemenite, Ethiopian and other Jewish communities which historically lived in isolation.

Christianity in the 1st century covers the formative history of Christianity from the start of the ministry of Jesus (c. 27–29 AD) to the death of the last of the Twelve Apostles (c. 100) and is thus also known as the Apostolic Age. Early Christianity developed out of the eschatological ministry of Jesus. Subsequent to Jesus' death, his earliest followers formed an apocalyptic messianic Jewish sect during the late Second Temple period of the 1st century. Initially believing that Jesus' resurrection was the start of the end time, their beliefs soon changed in the expected Second Coming of Jesus and the start of God's Kingdom at a later point in time.

Paul the Apostle, a Pharisee Jew, who had persecuted the early Christians of the Roman Province of Judea, converted c. 33–36 and began to proselytize among the Gentiles. According to Paul, Gentile converts could be allowed exemption from Jewish commandments, arguing that all are justified by their faith in Jesus. This was part of a gradual split between early Christianity and Judaism, as Christianity became a distinct religion including predominantly Gentile adherence.

Torah study is the study of the Torah, Hebrew Bible, Talmud, responsa, rabbinic literature, and similar works, all of which are Judaism's religious texts. According to Rabbinic Judaism, the study is done for the purpose of the mitzvah ("commandment") of Torah study itself.

This practice is present to an extent in all religious branches of Judaism, and is considered of paramount importance among religious Jews. Torah study has evolved over the generations, as lifestyles changed and also as new texts were written.

Karaite Judaism or Karaism is a non-Rabbinical Jewish sect characterized by the recognition of the written Tanakh alone as its supreme authority in halakha (religious law) and theology. Karaites believe that all of the divine commandments which were handed down to Moses by God were recorded in the written Torah without any additional Oral Torah or explanation.

Unlike mainstream Rabbinic Judaism (aka Talmudic Judaism), which regards the Oral Torah, codified in the Talmud and subsequent works, as authoritative interpretations of the Torah, Karaite Jews do not treat the written collections of the oral tradition in the Midrash or the Talmud as binding.

Jewish prayer (Hebrew: תְּפִילָּה, tefilla [tfiˈla]; plural תְּפִילּוֹת‎ tefillot [tfiˈlot]; Yiddish: תּפֿלה, romanized: tfile [ˈtfɪlə], plural תּפֿלות tfilles [ˈtfɪləs]; Yinglish: davening /ˈdɑːvənɪŋ/ from Yiddish דאַוון davn 'pray') is the prayer recitation that forms part of the observance of Rabbinic Judaism. These prayers, often with instructions and commentary, are found in the Siddur, the traditional Jewish prayer book.

Prayer, as a "service of the heart," is in principle a Torah-based commandment. It is mandatory for Jewish women and men. However, the rabbinic requirement to recite a specific prayer text does differentiate between men and women: Jewish men are obligated to recite three prayers each day within specific time ranges (zmanim), while, according to many approaches, women are only required to pray once or twice a day, and may not be required to recite a specific text.

Jewish holidays, also known as Jewish festivals or Yamim Tovim (Hebrew: יָמִים טוֹבִים, romanized: yāmīm ṭōvīm, lit. 'Good Days', or singular Hebrew: יוֹם טוֹב‎ Yom Tov, in transliterated Hebrew [English: /ˈjɔːm ˈtɔːv, joʊm ˈtoʊv/]), are holidays observed by Jews throughout the Hebrew calendar. They include religious, cultural and national elements, derived from four sources: mitzvot ("biblical commandments"), rabbinic mandates, the history of Judaism, and the State of Israel.

Jewish holidays occur on the same dates every year in the Hebrew calendar, but the dates vary in the Gregorian. This is because the Hebrew calendar is a lunisolar calendar (based on the cycles of both the sun and moon), whereas the Gregorian is a solar calendar. Each holiday can only occur on certain days of the week, four for most, but five for holidays in Tevet and Shevat and six for Hanukkah (see Days of week on Hebrew calendar).

In Judaism, a minyan (Hebrew: מניין \ מִנְיָן mīnyān [minˈjan], lit. (noun) count, number; pl. מניינים \ מִנְיָנִים‎ mīnyānīm [minjaˈnim]) is the quorum of ten Jewish adults required for certain religious obligations. In all traditional orthodox practising Jewish religious movements, only men aged 13 years and older may constitute a minyan. The minimum of 10 Jews needed for a minyan has its origin (in part) in Abraham's prayer to God in Genesis 18:32. The minyan has additional roots in the judicial structure of ancient Israel as Moses first established it in Exodus 18:25 (i.e., the "rule of the 10s"). Cyrus Adler's and Lewis Naphtali Dembitz's entry for "Minyan" in the Jewish Encyclopedia states: "The minimum of ten is evidently a survival in the Synagogue from the much older institution in which ten heads of families made up the smallest political subdivision. In Ex. xviii. Moses, on the advice of Jethro, appoints chiefs of tens, as well as chiefs of fifties, of hundreds, and of thousands. In like manner there were the decurio among the Romans and the tithingman among the early English."

The most common activity requiring a minyan is public prayer. Accordingly, the term minyan in contemporary Judaism has taken on the secondary meaning of referring to a given prayer service, in general.