Amos 1:11

Thus says the Lord: For three transgressions of Edom [descendants of Esau] and for four [for multiplied delinquencies], I will not reverse the punishment of it or revoke My word concerning it, because he pursued his brother Jacob (Israel) with the sword, corrupting his compassions and casting off all pity, and his anger tore perpetually and his wrath he kept and heeded forever.