EXODUS 10:2
and that thou mayest tell in the ears of thy son, and of thy son’s son, what things I have wrought upon Egypt, and my signs which I have done among them; that ye may know that I am the LORD.and that thou mayest tell in the ears of thy son, and of thy son’s son, what things I have wrought upon Egypt, and my signs which I have done among them; that ye may know that I am the LORD.