Deuteronomy 7, 6-11
For you are a people consecrated to Yahweh your God; of all the peoples on earth, you have been chosen by Yahweh your God to be his own people.
'Yahweh set his heart on you and chose you not because you were the most numerous of all peoples -- for indeed you were the smallest of all-
but because he loved you and meant to keep the oath which he swore to your ancestors: that was why Yahweh brought you out with his mighty hand and redeemed you from the place of slave-labour, from the power of Pharaoh king of Egypt.
From this you can see that Yahweh your God is the true God, the faithful God who, though he is true to his covenant and his faithful love for a thousand generations as regards those who love him and keep his commandments,
punishes in their own persons those that hate him. He destroys anyone who hates him, without delay; and it is in their own persons that he punishes them.
Hence, you must keep and observe the commandments, laws and customs which I am laying down for you today.