Deuteronomy 3:23; Deuteronomy 7:2; Deuteronomy 28:50

23 "I also pleaded with the LORD at that time, saying,
2 and when the LORD your God delivers them before you and you defeat them, then you shall utterly destroy them. You shall make no covenant with them and show no favor to them.
50 a nation of fierce countenance who will have no respect for the old, nor show favor to the young.