 And lo, I am with you all the way, even to the end of the world. What he's saying is, don't just tell them how to be saved. That's great that a person gets saved, and their sins are forgiven, and they'll spend eternity in heaven. But he says then, they need to be taught to observe all things whatsoever I have commanded you. So, a person gets saved, they need to be taught the Word of God.