"... all Christians are being transformed into the image of Christ more and more, and that happens by beholding as in a mirror the glory of the Lord. This mirror is so powerful that when we look into it, it changes us. This powerful mirror is the Word of God."
Please read The Instrument of Transformation, by DR Tony Evans, The Urban Alternative, at One Place.
But we all, with unveiled face, beholding as in a mirror the glory of the Lord, are being transformed into the same image from glory to glory, just as from the Lord, the Spirit.
2 Corinthians 3:18