Deuteronomy 11:17

13It shall happen, if you shall listen diligently to my commandments which I command you today, to love the LORD your God, and to serve him with all your heart and with all your soul,

14that I will give the rain for your land in its season, the early rain and the latter rain, that you may gather in your grain, your new wine, and your oil.

15I will give grass in your fields for your livestock, and you shall eat and be full.

16Be careful, lest your heart be deceived, and you turn away to serve other gods and worship them;

17and the LORD’s anger be kindled against you, and he shut up the sky so that there is no rain, and the land doesn’t yield its fruit; and you perish quickly from off the good land which the LORD gives you.

18Therefore you shall lay up these words of mine in your heart and in your soul. You shall bind them for a sign on your hand, and they shall be for frontlets between your eyes.

19You shall teach them to your children, talking of them when you sit in your house, when you walk by the way, when you lie down, and when you rise up.

20You shall write them on the door posts of your house and on your gates;

21that your days and your children’s days may be multiplied in the land which the LORD swore to your fathers to give them, as the days of the heavens above the earth.