This is recorded here, To show that tho' Abraham saw his own family highly dignified with peculiar privileges, yet he did not look with contempt upon his relations, but was glad to hear of the increase and prosperity of their families. To make way for the following story of the marriage of Isaac to Rebekah, a daughter of this family.
Related Commentaries of Genesis 22:20
Genesis 22:20
20 And it came to pass after these things, that it was told Abraham, saying, Behold, Milcah, she hath also born children unto thy brother Nahor;