Deuteronomy 11:16-21

Beware that your hearts are not deceived, and that you do not turn away [from the LORD] and serve other gods and worship them, or [else] the LORD’S anger will be kindled and burn against you, and He will shut up the heavens so that there will be no rain and the land will not yield its fruit; and you will perish quickly from the good land which the LORD is giving you. “Therefore, you shall impress these words of mine on your heart and on your soul, and tie them as a sign on your hand, and they shall be as bands (frontals, frontlets) on your forehead. You shall teach them [diligently] to your children [impressing God’s precepts on their minds and penetrating their hearts with His truths], speaking of them when you sit in your house and when you walk along the road and when you lie down and when you rise up. You shall write them on the doorposts of your house and on your gates, so that your days and the days of your children may be multiplied in the land which the LORD swore to your fathers to give them, as long as the heavens are above the earth.