yits.chaq names Abraham and Sarah’s son, later identified as father of Esau and Israel and named in covenant and land-oath formulas.

The term is consistently a proper name for Abraham and Sarah’s son: Genesis narratives identify him as Abraham’s son, Rebekah’s husband, and the father of Esau and Israel, while later passages name him with Abraham and Jacob in statements about God’s covenant, oath, and promised land.

1. Personal name in family and covenant references · dominant

   The form is tagged Noun · Proper throughout. In Genesis 17:19 the APB renders God’s announcement that Sarah will bear a son and that his name will be Isaac; Genesis 25:19 identifies him as Abraham’s son, while Genesis 25:26 places him as the father present at the birth of Esau’s brother. In Exodus 6:8 and Deuteronomy 34:4, the name occurs with Abraham and Jacob in the oath concerning the land.

   Genesis 17:19Genesis 25:19Genesis 25:26Genesis 24:67Exodus 6:8Deuteronomy 34:4

In the Anselm Project Bible: Across the supplied verses, the APB presents the proper name as “Isaac,” both in family scenes and in lists with Abraham, Jacob, Esau, Rebekah, and Sarah. That English presentation confirms the verse-level identification rather than supplying a separate lexical nuance.