18 And he is the head of the body, the church; ----Of all Biblical illustrations regarding the church. We become members of this body the instant we accept Jesus as our Lord and Savior.  Because He is before all things, because He has the preeminence over all things, He is, of course, the Head of His church. The head always determines how the body works! ------ Clearly, this points to Jesus as the One who directs us—individually and the church at—large.  Sadly, there are Christians with their own agenda.  Agendas that are different from the agenda of the Head.