Charles Ellicott Commentary 2 Chronicles 20:7

"Didst not thou, O our God, drive out the inhabitants of this land before thy people Israel, and give it to the seed of Abraham thy friend for ever?" — 2 Chronicles 20:7 (ASV)

Are you not our God? — Did you not, our God, drive out, etc. (Joshua 23:9; Deuteronomy 4:38; Deuteronomy 11:23; and for the form of appeal, Isaiah 2:9–10. Compare also to Psalms 47:3-4.)

And gave it to the seed of Abraham. —According to the Promise, Genesis 13:15–16; Genesis 15:18.

For ever. —Genesis 17:8, for an everlasting possession.

Your friend. —Or, lover. So Isaiah 41:8, seed of Abraham, my friend. This title of Abraham is mentioned again by Saint James (James 2:23). Hebron, the patriarch’s burial-place, is today known to the Muslim world as el-Khalil, the Friend.