Without controversy, the mystery of godliness is great: God was revealed in the flesh, Justified in the spirit, Seen by angels, Preached among the nations, Believed on in the world, And received up in glory.

 Here in one phrase is the reason why the Pastoral Epistles were written; they were written to tell men how to behave within the Church. The word for to behave is anastrephesthai ( G390) ; it describes what we might call a man's walk and conversation. It describes his whole life and character; but it specially describes him in his relationships with other people. As it has been said, the word in itself lays it down that a church member's personal character must be excellent and that his personal relationships with other people should be a true fellowship. A church congregation is a body of people who are friends with God and friends with each other. Paul goes on to use four words which describe four great functions of the Church. 