Jesus really only offers us three choices as to who He is: liar, lunatic, or Lord. He asks Peter, “Who do you say that I am?”(Matt 16:15). Peter doesn’t call Him a good man, a teacher, a prophet; he doesn’t call Him a lunatic, either. No, Peter calls Him the Messiah, the Son of God – Lord.
Fr. Mike Schmitz has some great teaching for us on this. How do we know who Jesus is? He tells us and then He proves it: