“Now it came about after these things, that it was told Abraham, saying, “Behold, Milcah also has borne children to your brother Nahor: Uz his firstborn and Buz his brother and Kemuel the father of Aram and Chesed and Hazo and Pildash and Jidlaph and Bethuel.” Bethuel became the father of Rebekah; these eight Milcah bore to Nahor, Abraham’s brother. His concubine, whose name was Reumah, also bore Tebah and Gaham and Tahash and Maacah.” Gen. 22:20-24
We haven’t heard anything about Abraham’s family since he left them in Genesis 12. Abraham hears the news that his brother Nahor has a growing family. Nahor has twelve children in all, and at least two grandchildren. Eight of the children are through his wife Milcah, and four are through his concubine Reumah.
We often read verses like this and think there is no real purpose why they are there. Consider that Abraham almost slew his only son (since Ishmael had been sent away) and was now reminded of his promise of many descendants to come. Surely this news of his brothers expanded family warmed his heart and refreshed his hope!
This news is also mentioned because Isaac’s future wife, Rebekah would come from among the family, of which Abraham had hoped to marry his son into as we will see in Gen. 24.