And that thou mayest tell in the ears of thy son, and of thy
 son's son
 Not of his sons and grandsons only; for Moses here, as Aben Ezra observes, was in the stead of Israel; and the sense is, that it should be told to their posterity in all succeeding ages: 
 what things I have wrought in Egypt;
 the plagues that he inflicted on the Egyptians: 
 and my signs which I have done amongst them;
 meaning the same things which were signs: 
 that ye may know how that I am the Lord;
 that their God is the true Jehovah, and the one only living and true God; the Lord God omnipotent, omniscient, omnipresent, infinite, and eternal.