'Descendants' in the Bible

Thus says the Lord,“For three transgressions of Edom [the descendants of Esau] and for four (multiplied delinquencies)I will not reverse its punishment or revoke My word concerning it,Because he pursued his brother Jacob (Israel) with the sword,Corrupting and stifling his compassions and casting off all mercy;His destructive anger raged continually,And he maintained [and nurtured] his wrath forever.

Thus says the Lord,“For three transgressions of the children of Ammon and for four (multiplied delinquencies)I will not reverse its punishment or revoke My word concerning it,Because the Ammonites have ripped open the pregnant women of Gilead,That they might enlarge their border.

Thus says the Lord,“For three transgressions of Moab and for four (multiplied delinquencies)I will not reverse its punishment or revoke My word concerning it,Because he burned the bones of the king of Edom [Esau’s descendant] into lime [and used it to plaster a Moabite house].