Deuteronomy 4:9-14

Only take heed to yourself, and diligently keep yourself, lest you forget the things your eyes have seen, and lest they depart from your heart all the days of your life. And teach them to your children and your grandchildren, especially concerning the day you stood before the LORD your God in Horeb, when the LORD said to me, ‘Gather the people to Me, and I will let them hear My words, that they may learn to fear Me all the days they live on the earth, and that they may teach their children.’ “Then you came near and stood at the foot of the mountain, and the mountain burned with fire to the midst of heaven, with darkness, cloud, and thick darkness. And the LORD spoke to you out of the midst of the fire. You heard the sound of the words, but saw no form; you only heard a voice. So He declared to you His covenant which He commanded you to perform, the Ten Commandments; and He wrote them on two tablets of stone. And the LORD commanded me at that time to teach you statutes and judgments, that you might observe them in the land which you cross over to possess.