Deuteronomy 7:12-13

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.