Abraham's father was Terah, the grandfather was Nahor. Abraham's brothers were named Nahor and Haran. According to Genesis, Abraham was brought by God from Mesopotamia to the land of Canaan. There Abraham entered into a covenant: in exchange for sole recognition of YHWH as supreme universal deity and authority, Abraham will be blessed with innumerable progeny. According to Jewish tradition (based on the Anno Mundi era), Abraham lived AM 19482123 (1812 BCE to 1637 BCE). Christian traditional dates are about 2000 BCE to 1825 BCE.

Judaism, Christianity and Islam are sometimes referred to as the "Abrahamic religions", because of the progenitor role Abraham plays in their holy books. In the Jewish tradition, he is called Avraham Avinu or "Abraham, our Father". God promised Abraham that through his offspring, all the nations of the world will come to be blessed ( ), interpreted in Christian tradition as a reference particularly to Christ. Jews, Christians, and Muslims consider him father of the people of Israel through his son Isaac (cf. , ). For Muslims, he is a prophet of Islam and the ancestor of Muhammad through his other son Ishmael - born to him by his wife's servant, Hagar. Abraham is also a progenitor of the Semitic tribes of the Negev who trace their descent from their common ancestor Sheba ( ).

Etymology

Abraham's original name was Abram ( , Standard Avram Tiberian ) meaning either "exalted father" or "my father is exalted" (compare Abiram). For the later part of his life, he was called Abraham, which the text glosses as av hamon (goyim) "father of many (nations)" ; however the name does not have any literal meaning in Hebrew.

'brm (no. 72) represents 'abram, with which Spiegelberg proposes to connect the preceding name (so that the whole would read "the field of Abram."). Outside of Palestine this name (Abiramu) has come to light in Babylonia (e.g. in a contract of the reign of Apil-Sin, second predecessor of Hammurabi; also for the aunt of Esarhaddon 680-669 BCE). Ungnad has recently found it, among documents from Dilbat dating from the Hammurabi dynasty, in the forms A-ba-am-ra-ma, A-ba-am-ra-am, as well as A-ba-ra-ma.

Until this latest discovery of the apparently full, historical form of the Babylonian equivalent, the best that could be done with the etymology was to make the first constituent "father of" (construct -i rather than suffix -i), and the second constituent "Ram," a proper name or an abbreviation of a name. (Yet observe above its use in Assyria for a woman; compare ABISHAG; ABIGAIL). Some were inclined rather to concede that the second element was a mystery, like the second element in the majority of names beginning with 'abh and 'ach, "father" and "brother." But the full cuneiform writing of the name, with the case-ending am, indicates that the noun "father" is in the accusative, governed by the verb which furnishes the second component, and that this verb therefore is prove him (though hitherto childless) a great nation. Trusting this promise, Abram journeyed down to Shechem, and at the sacred tree (compare , , ) received a new promise that the land would be given unto his seed (descendant or descendants). Having built an altar to commemorate the theophany, he removed to a spot between Bethel and Ai, where he built another altar and then called upon (i.e. invoked) the name of God ( .