FIRST you must be born again. This is the moment GOD JUSTIFIES you because you believe in Whim He sent for your salvation. This is by grace alone so that Christ Alone is due the glory for the gift of Salavation of your spirit.
SECOND is SANCTUFICATION. This is where you appear confused. The sanctifying 'process' is the transforming of the soul --not the soul-- as you repent of your sinfulness and GOD abiding in your born again Justified spirit directs change.
At the Departure of the body of all believers in Jesus as The One Who saved our spirit from the state of deadness to righteousness, at that moment, in the twinkling of an eye, GOD will put our newborn spirit into a new body with a new behavior mechanism written upon our spirit for eternal living in a real physical body. That moment is the third tense of salvation, the GLORIFICATION of the newborns in the Body of Christ *as in the collective student body of a college*.
Repenting of your sinful self is how The Word of God separates soul and spirit; you are made aware of your sinful state of spiritual deadness BY THE WORD OF GOD which is sharper than any two-edged sword, able to separate soul and spirit ... my sinful self is repugnant to my newborn spirit, so I yield to a new director. Repentance is an ongoing process whereby God transforms the behavior mechanism by the renewing of the mind as we yield to His abiding Presence in our born again spirit.