Deuteronomy 7:12-13

12And it shall come to pass, if ye hearken to these ordinances, and keep and do them, that Jehovah thy 1God will keep with thee the covenant and the mercy which he swore unto thy fathers;

13and he will love thee, and bless thee, and multiply thee, and will bless the fruit of thy womb, and the fruit of thy ground, thy corn and thy new wine, and thine oil, the offspring of thy kine, and the increase of thy sheep, in the land which he swore unto thy fathers to give thee.