“But we all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory, even as by the Spirit of the Lord.” 2 Corinthians 3:18 (KJV)
We do not have a clear understanding in what all the above verse. We will not until we see Jesus face to face. What a day; for the one who is in Christ Jesus; that will be.
Notice if you will that it does not say “…Will change…” as though it were some future event. It says “…Are changed…” as in presently changed, and continual changing is most likely meant. Meaning that we are being prepared for that day when we will see Jesus; with “…the same image from glory to glory by the Spirit of the Lord.”
He is working in you to bring you to a complete and finished work (Philippians 1:6; 2 Corinthians 5:17); His glory. Every Christian desires to be what the Lord wants them to be.