Ibn Ezra on Deuteronomy 4:5/אבן עזרא על דברים ד׳:ה׳

1[I HAVE TAUGHT YOU.] Moses states, I have taught you, after saying which I teach you (v. 1), because he wants to add, even as the Lord my God commanded me. The meaning of our verse is, the precepts which I taught you are God’s commandments, which you should observe in the land that God will give you for a possession. Furthermore, the commandments are your glory over the nations. 6. YOUR WISDOM AND YOUR UNDERSTANDING IN THE SIGHT OF THE PEOPLES. Because an intelligent person can understand the basis of all the commandments. An intelligent person can ascertain the reason why they were given.