Deuteronomy 7:12-16

12Therefore it shall come to pass, if ye hearken to these judgments, and keep, and do them, that the LORD thy God shall keep to thee the covenant and the mercy which he swore to thy fathers:1 13And he will love thee, and bless thee, and multiply thee: he will also bless the fruit of thy womb, and the fruit of thy land, thy grain, and thy wine, and thy oil, the increase of thy cattle, and the flocks of thy sheep, in the land which he swore to thy fathers to give thee. 14Thou shalt be blessed above all people: there shall not be male or female barren among you, or among your cattle. 15And the LORD will take away from thee all sickness, and will put none of the evil diseases of Egypt, which thou knowest, upon thee; but will lay them upon all them that hate thee. 16And thou shalt consume all the people which the LORD thy God shall deliver to thee; thy eye shall have no pity upon them: neither shalt thou serve their gods; for that will be a snare to thee.