If Jesus is not God, then there is no Christianity, and we who worship Him are nothing more than idolaters. Conversely, if He is God, those who say He was merely a good man, or even the best of men, are blasphemers. More serious still, if He is not God, then He is a blasphemer in the fullest sense of the word. If He is not God, He is not even good.
St. Augustine, Dr. Howard Taylor, Mrs. Howard Taylor, Apostolic Fathers, J. Oswald Sanders (2010). “Moody Classics Complete Set: Includes 19 Classics of the Faith in a Single Volume”, p.809, Moody Publishers