The apex of the Christian life is the beatific vision, seeing God as He is for all eternity. However, if the Lord dwells in unapproachable light how then is the believer able to approach such a holy God? It would be rather easy to simply reply, “through the mediatory work of Jesus Christ.” Yet, this response, while correct, does not fully answer the question of how we stand before the Lord through the work of Jesus Christ. Therefore, this paper will explore how 2 Corinthians 3, 2 Peter 1, and 1 John mutually inform one another to build an evangelical theology of sanctification and deification. Understood here as two sides of the same coin, sanctification, and deification are the applied work of Jesus Christ through the Holy Spirit in the life of the believer. First, we will biblically and historically consider sanctification and deification. Second, we will explore how the texts mentioned above inform one another of the (1)how, (2)what, and (3)when of sanctification and deification. In doing so this paper will show how both the doctrine of sanctification and deification are two sides of the same coin. Finally, there will be a portion dedicated to how these doctrines have implications/applications for the Christian life.