I see your point Gina, to what Paul refers....
myself should become unfit [not stand the test, be unapproved and rejected as a counterfeit].
Yes...that which is unfit, rejected and counted as counterfeit IS the MY self that is the ego or the beast within sitting on the Throne of Christ in Temple that we are.
Consider also Paul also wrote the following ~
Rom 7:5 For while we were living in the flesh, sinful passions aroused by the law were at work in our bodies to bear fruit for death.
Rom 12:1 I therefore urge you, brothers, in
view of God's mercies, to offer your bodies as living sacrifices that are holy and pleasing to God, for this is the reasonable way for you to worship.
If you are not "in view of God's mercies" then living in the flesh as sinful passion aroused by the law, is the work of deliverance of God's Spirit that saves the lost, restores the broken and uplifts the downtrodden leaving no one unfit, unapproved or rejected.
All are saved in view of God's mercies.