If you practice what you preach and practice makes perfect then why haven't I ever heard a perfect preach been made by a preacher? It seems that most of the preachers I've heard have made speeches (making them speechers or speakers) or they have talked (making them talkers). Often I have been sermonized and castized and sometimes preached to, but the sermon or the castigation or the preach was never what I would call perfect. Maybe perfect is in the ear of the beholder?
Besides, according to Ben Franklin you're supposed to believe none of what you hear and half of what you see.
I won't bend your ear any longer. Have a nice Sunday.