Isaac

Isaac is one of the three patriarchs of the Israelites and an important figure in the Abrahamic religions, including Judaism, Samaritanism, Christianity, Islam, the Baháʼí Faith, and Rastafari. Isaac first appears in the Torah, in which he is the son of Abraham and Sarah, the father of Jacob and Esau, and the grandfather of the twelve tribes of Israel.

Isaac's name means "he will laugh", reflecting the laughter, in disbelief, of Abraham and Sarah, when told by God that they would have a child. He is the only patriarch whose name was not changed, and the only one who did not move out of Canaan. According to the narrative, he died aged 180, the longest-lived of the three patriarchs.

Recent scholarship has discussed the possibility that Isaac could have originally been an ancestor from the Beersheba region who was venerated at a sanctuary.

The anglicized name "Isaac" is a transliteration of the Biblical Hebrew: יִצְחָק, romanized: Yiṣḥāq, which literally means "He laughs/will laugh". Ugaritic texts dating from the 13th century BCE refer to the benevolent smile of the Canaanite deity El. Genesis ascribes the laughter to Isaac's parents, Abraham and Sarah, instead. According to the biblical narrative, Abraham fell on his face and laughed when God (Hebrew, Elohim) imparted the news of their son's eventual birth. He laughed because Sarah was past the age of childbearing; both she and Abraham were advanced in age. Later, when Sarah overheard three messengers of the Lord renew the promise, she laughed inwardly for the same reason. Sarah denied laughing when God questioned Abraham about it.

After God changes Abram and Sarai's names to Abraham and Sarah, he tells Abraham that he will bear a second son by Sarah named Isaac, with whom a new covenant would be established. In response, Abraham began to laugh, as both he and Sarah were well beyond natural child-bearing age. Some time later, three men who Abraham identifies as messengers of God visit him and Sarah, and Abraham treats them to food and niceties. They repeat the prophecy that Sarah would bear a child, promising Isaac's birth within a year's time, at which point Sarah laughs in disbelief. God questions why the pair laughed in disbelief at his words, and if it is because they believe such things were not within his power. Now afraid, they futilely deny ever having laughed at God's words.

Time passes as Isaac is born. Isaac was Abraham's second son and firstborn of Sarah who was then Sarai. Sarai had been barren for a long time and sought a way to fulfill God's promise that Abram would be father of many nations, especially since they had grown old, so she offered Hagar to Abram to be his concubine.

On the eighth day from his birth, Isaac was circumcised, as was necessary for all males of Abraham's household, in order to be in compliance with the Jewish covenant.

After Isaac had been weaned, Sarah saw Ishmael playing with or mocking him (the Hebrew term is ambiguous), and urged her husband to cast out Hagar the bondservant and her son, so that Isaac would be Abraham's sole heir. Abraham was hesitant, but at God's order he listened to his wife's request.