This idea of the divinization of mankind may be a foreign idea to many. I don't think I heard about it until I started seminary. But a correct understanding of the divinization of mankind, which is a result of the Incarnation of God, and what we are to do with this correct understanding, is necessary if we are truly to be Christians. I say necessary because to be transformed into Christ is actually what being a follower of Christ is all about. The bulk of this post will be taken up with another wonderful excerpt from Transformation in Christ. This particular section is from the first chapter and is one of the most important sections in the entire book. It is necessary to grasp the meaning of what he says here, and its implications, in order to understand everything that follows in the rest of the book. This section is subtitled: Transformation in Christ requires unqualified readiness to change.
The full readiness to change – which might even better be termed readiness to become another man – is present in him only who, having heard the call 'Follow me' from the mouth of the Lord, follows Him as did the Apostles, 'leaving everything behind.' To do so, he is not required literally to relinquish everything in the sense of the evangelical counsels: this would be in answer to another, more particular call. He is merely required to relinquish his old self, the natural foundation, and all purely natural standards, and open himself entirely to Christ's action – comprehending and answering the call addressed to all Christians: 'Put on the new man, who according to God is created in justice and holiness of truth.'
Readiness to change, taken in this sense, is the first prerequisite for the transformation in Christ. But, in addition thereto, more is needed: a glowing desire to become a new man in Christ; a passionate will to give oneself over to Christ. And this, again, presupposes a state of fluidity, as it were: that we should be like soft wax, ready to receive the imprint of the features of Christ. We must be deteremined not to entrench ourselves in our nature, not to maintain or assert ourselves, and above all, not to set up beforehand – however unconsciously – a framework of limiting or qualifying factors for the pervasive and re-creative light of Christ. Rather we must be filled with an unquenchable thirst for regeneration in all things. We must fully experience the bliss of flying into Christ's arms, who will transform us by His light beyond any measure we might ourselves intend. We must say as did St. Paul on the road to Damascus: 'Lord, what wilt Thou have me to do?'
From this we should come to understand that Christ – God made Man – did not come and die for our sins so that we could merely become the best possible versions of ourselves we can be. No, He came so that we might become like Him.