Through ''[[theoria]]'', the knowledge of God in Jesus Christ, human beings come to know and experience what it means to be fully human (the created image of God); through their communion with Jesus Christ God shares Himself with the human race, in order to conform them to all that God is in knowledge, righteousness and holiness. ''Theosis'' also asserts the complete restoration of all people (and of the entire creation), in principle. This is built upon the understanding of the [[atonement]] put forward by [[Irenaeus]], called "recapitulation".
For many fathers, ''theosis'' goes beyond simply restoring people to their state before the Fall of [[Adam and Eve]], teaching that because Christ united the human and divine natures in his person, it is now possible for someone to experience closer fellowship with God than Adam and Eve initially experienced in the Garden of Eden, and that people can become more like God than Adam and Eve were at that time. Some Orthodox theologians go so far as to say that Jesus would have become [[Incarnation|incarnate]] for this reason alone, even if Adam and Eve had never sinned.
All of humanity is fully restored to the full potential of humanity because the Son of God took to Himself a human nature to be born of a woman, and takes to Himself also the sufferings due to sin (yet is not Himself a sinful man, and is God unchanged in His being). In Christ, the two natures of God and human are not two persons but one; thus, a union is effected in Christ, between all of humanity and God. So, the holy God and sinful humanity are reconciled in principle, in the one sinless man, Jesus Christ. (See Jesus's prayer as recorded in [[Gospel of John|John]] [http://drbo.org/cgi-bin/d?b=drb&bk=50&ch=017 17].)