Genesis 21:4

21:4 When his son Isaac was eight days old, 1  Abraham circumcised him just as God had commanded him to do. 2 

Genesis 22:23

22:23 (Now 3  Bethuel became the father of Rebekah.) These were the eight sons Milcah bore to Abraham’s brother Nahor.

1 tn Heb “Isaac his son, the son of eight days.” The name “Isaac” is repeated in the translation for clarity.

2 sn Just as God had commanded him to do. With the birth of the promised child, Abraham obeyed the Lord by both naming (Gen 17:19) and circumcising Isaac (17:12).

3 tn The disjunctive clause gives information that is important but parenthetical to the narrative. Rebekah would become the wife of Isaac (Gen 24:15).