A.T. Robertson Commentary 2 Corinthians 3:11

"For if that which passeth away [was] with glory, much more that which remaineth [is] in glory." — 2 Corinthians 3:11 (ASV)

Passeth away (καταργουμενον). In process of disappearing before the gospel of Christ.

Remaineth (μενον). The new ministry is permanent. This claim may be recommended to those who clamour for a new religion. Christianity is still alive and is not dying. Note also εν δοξη, in glory, in contrast with δια δοξης, with glory.

Boldness (παρρησια). Instrumental case after χρωμεθα. Old word, πανρησισ=παρρησις, telling it all, absolute unreservedness. Surely Paul has kept nothing back here, no mental reservations, in this triumphant claim of superiority.