Deuteronomy 11:20

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.

22For if you shall diligently keep all these commandments which I command you—to do them, to love the LORD your God, to walk in all his ways, and to cling to him—