The question asked, -what is man-- finds answer in 3 parts. Man, as he was created, man, fallen and man in Christ Jesus... But we must also consider that Christ Himself became the perfect man fulfilling our creation mandate and including us with Himself. In this act of perfect obedience He opens the pathway for us to display the Glory of God in Christ that we were created to to fulfill. This work of display is the outworking of God's perfect wisdom, power and righteousness as He forms Christ in us-