Deuteronomy 4:9-10

9“Only be on your guard and diligently watch yourselves, so that you don’t forget the things your eyes have seen and so that they don’t slip from your mind as long as you live. Teach them to your children and your grandchildren.

10The day you stood before the Lord your God at Horeb, the Lord said to me, ‘Assemble the people before me, and I will let them hear my words, so that they may learn to fear me all the days they live on the earth and may instruct their children.’