El Shaddai in the context of "Priestly source"

God the Father is a title given to God in Christianity. In mainstream trinitarian Christianity, God the Father is regarded as the First Person of the Trinity, followed by the Second Person, Jesus Christ the Son, and the Third Person, the Holy Spirit. Since the second century, Christian creeds included affirmation of belief in "God the Father (Almighty)", primarily in his capacity as "Father and creator of the universe".

Christians take the concept of God as the father of Jesus Christ metaphysically further than the concept of God as the creator and father of all people, as indicated in the Apostles' Creed where the expression of belief in the "Father almighty, creator of heaven and earth" is immediately, but separately followed by in "Jesus Christ, his only Son, our Lord", thus expressing both senses of fatherhood.

In Judaism, God has been conceived in a variety of ways. Traditionally, Judaism holds that God—that is, the god of Abraham, Isaac and Jacob, and the national god of the Israelites—delivered them from slavery in Egypt, and gave them the Law of Moses at Mount Sinai as described in the Torah. Jews believe in a monotheistic conception of God ("God is one"), characterized by both transcendence (independence from, and separation from, the material universe) and immanence (active involvement in the material universe).

God is seen as unique and perfect, free from all faults, and is believed to be omnipotent, omnipresent, omniscient, and unlimited in all attributes, with no partner or equal, serving as the sole creator of everything in existence. In Judaism, God is never portrayed in any image. The names of God used most often in the Hebrew Bible are the un-pronounced Tetragrammaton (Hebrew: יהוה, romanized: YHWH) and Elohim. Other names used to refer to God in traditional Judaism include Adonai, El-Elyon, El Shaddai, and Shekhinah.

Yahweh was an ancient Semitic deity of weather and war in the southeastern ancient Levant, and the national god of the iron age kingdoms of Israel and Judah. Although there is no clear consensus regarding the geographical origins of the deity, scholars generally hold that Yahweh was associated with Seir, Edom, Paran, and Teman, and later with Canaan. The worship of the deity goes back to at least the early Iron Age and apparently to the late Bronze Age.

In the oldest biblical texts, Yahweh possesses attributes that were typically ascribed to deities of weather and war, fructifying the Land of Israel and leading a heavenly army against the enemies of the Israelites. The early Israelites engaged in polytheistic practices that were common across ancient Semitic religion, because the Israelite religion was a derivative of the Canaanite religion and included a variety of deities from it, including El, Asherah, and Baal. Initially a lesser deity among the Canaanite pantheon, Yahweh became conflated with El in later centuries, taking his place as the head of the pantheon in the Israelite religion. El's consort Asherah became associated with Yahweh, and El-linked epithets, such as ʾĒl Šadday (אֵל שַׁדַּי‎), came to be applied to him alone. Characteristics of other deities, such as Asherah and Baal, were also selectively absorbed in conceptions of Yahweh.

The Bible usually uses the name of God in the singular (e.g. Ex. 20:7 or Ps. 8:1), generally using the terms in a very general sense rather than referring to any special designation of God. However, general references to the name of God may branch to other special forms which express His multifaceted attributes. The Old Testament/Hebrew Bible reveals YHWH (often vocalized with vowels as "Yahweh" or "Adonai") as the personal name of God, along with certain titles including El Elyon and El Shaddai. Jah or Yah is an abbreviation of Jahweh/Yahweh, and often sees usage by Christians in the interjection "Hallelujah", meaning "Praise Yah", which is used to give God glory. In the New Testament the terms Theos, Kyrios and Patēr (πατήρ i.e. Father in Greek) are additionally used to reference God.

Respect for the name of God is one of the Ten Commandments, which some Christian teachings interpret to be not only a command to avoid the improper use of God's name, but a directive to exalt it through both pious deeds and praise. This is reflected in the first petition in the Lord's Prayer addressed to God the Father: "Hallowed be Thy Name".

Judaism has different names given to God, which are considered sacred: יהוה (YHWH), אֲדֹנָי (Adonai transl. my Lord[s]), אֵל (El transl. God), אֱלֹהִים (Elohim transl. Gods/Godhead), שַׁדַּי (Shaddai transl. Almighty), and צְבָאוֹת (Tzevaot transl. [Lord of] Hosts); some also include I Am that I Am. Early authorities considered other Hebrew names mere epithets or descriptions of God, and wrote that they and names in other languages may be written and erased freely. Some moderns advise special care even in these cases, and many Orthodox Jews have adopted the chumras of writing "G-d" instead of "God" in English or saying Ṭēt-Vav (טו, lit. '9-6') instead of Yōd-Hē (יה, '10-5', but also 'Jah') for the number fifteen or Ṭēt-Zayin (טז, '9-7') instead of Yōd-Vav (יו, '10-6') for the Hebrew number sixteen.