Matthew Henry's Complete Bible Commentary
Verses 20—24
This is recorded here, 1. To show that though Abraham saw his own family highly dignified with peculiar privileges, admitted into covenant, and blessed with the entail of the promise, yet he did not look with contempt and disdain upon his relations, but was glad to hear of the increase and prosperity of their families. 2. To make way for the following story of the marriage of Isaac to Rebekah, a daughter of this family. MHBCC 23.28