Deuteronomy 7:9-10

9And thou shalt know that Jehovah thy 1God, he is 2God, the faithful 3God, who keepeth covenant and mercy to a thousand generations with them that love him and keep his commandments;

10and repayeth them that hate him [each] to his face, to cause them to perish: he delayeth not with him that hateth him, he will repay him to his face.