Deuteronomy 4:9-10

9“Only be watchful and watch over your soul closely, so you do not forget the things your eyes have seen and they slip from your heart all the days of your life. You are to make them known to your children and your children’s children.

10The day that you stood before Adonai your God in Horeb, Adonai said to me, ‘Gather the people to Me and I will make them hear My words, so that they learn to fear Me all the days that they live on the earth, and so that they teach their children.’