Deuteronomy 7:6-10

For thou art an holy people unto the LORD thy God: the LORD thy God hath chosen thee to be a special people unto himself, above all people that are upon the face of the earth.

The LORD did not set his love upon you, nor choose you, because ye were more in number than any people; for ye were the fewest of all people:

But because the LORD loved you, and because he would keep the oath which he had sworn unto your fathers, hath the LORD brought you out with a mighty hand, and redeemed you out of the house of bondmen, from the hand of Pharaoh king of Egypt.

Know therefore that the LORD thy God, he is God, the faithful God, which keepeth covenant and mercy with them that love him and keep his commandments to a thousand generations;

And repayeth them that hate him to their face, to destroy them: he will not be slack to him that hateth him, he will repay him to his face.