11 For if that which is done away was glorious, much more that which remaineth is glorious.
[AD 384] Ambrosiaster on 2 Corinthians 3:11
Paul does not deny that there was splendor in the law and on the face of Moses, but it did not endure because in his case it was a symbol and not a reality. The difference between the face of Moses and the glory of Christ is the same as the difference between the picture and the person whom it portrays.

[AD 407] John Chrysostom on 2 Corinthians 3:11
"For if that which passes away was with glory, much more that which remains is in glory."

For the one ceased, but the other abides continually.