Strong’s Greek
G2734 — katoptrizomai
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κατοπτρίζομαι
katoptrizomai — pronounced kat-op-trid'-zom-ahee
middle voice from a compound of 2596 and a derivative of 3700 (compare 2072); to mirror oneself, i.e. to see reflected (figuratively):--behold as in a glass. see GREEK for 2596 see GREEK for 3700 see GREEK for 2072
1 occurrence in the KJV.
2 Corinthians 3:18
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.