Derek describes the triune nature of man (spirit-soul-body), made in the image of our Triune God, and how every part of man was affected by the Fall. Since man lives on 3 dimensions, he needs a 3D salvation, which only God can accomplish. If we trust in Him, the God of peace Himself will sanctify you completely; so that your whole spirit, soul, and body will be blameless at the Coming of Christ (1Thessalonians 5:23). First, (1) our spirit was saved in the New Birth. Then (2) our soul is being saved now by God's Word and Spirit. Finally, when Christ returns He will save our bodies by resurrected them. Our salvation will then be completed by our glorification.