You not only have a manifestly superficial view of teaching and preaching in Scripture, but of your own teaching and my constant refutations, of which i let others judge. Time to get some sleep by God's grace.
"And Jesus came and spoke to them, saying, All power is given to me in heaven and in earth. Go you therefore, and TEACH all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: TEACHING them to observe all things whatever I have commanded you: and, see, I am with you always, even to the end of the world. Amen."