Deuteronomy 7:12-18

12If you pay attention to these laws and are careful to follow them, then the Lord your God will keep his covenant of love with you, as he swore to your ancestors. 13He will love you and bless you and increase your numbers. He will bless the fruit of your womb, the crops of your land—your grain, new wine and olive oil—the calves of your herds and the lambs of your flocks in the land he swore to your ancestors to give you. 14You will be blessed more than any other people; none of your men or women will be childless, nor will any of your livestock be without young. 15The Lord will keep you free from every disease. He will not inflict on you the horrible diseases you knew in Egypt, but he will inflict them on all who hate you. 16You must destroy all the peoples the Lord your God gives over to you. Do not look on them with pity and do not serve their gods, for that will be a snare to you. 17You may say to yourselves, “These nations are stronger than we are. How can we drive them out?” 18But do not be afraid of them; remember well what the Lord your God did to Pharaoh and to all Egypt.