Theophylact of Ohrid, on 2Cor 3:4

“And such confidence we have, through Christ, towards God.”

“Since he showed that the New Testament is above the Old, and it was natural to conclude that we too — the apostles, ministers of the New Testament — are above Moses, who served the Old Testament, but this seemed arrogant, he says: nothing is ours, but our "confidence," that is, our boasting is "in God through Christ." For Christ is the reason that we boast in God, and nothing is ours, not even the slightest thing. This very thought he expresses with the words: "we are not sufficient to think anything of ourselves." Our strength, he says, is from God: He made us "sufficient," that is, He strengthened us, made us capable of serving this great divine work — the New Testament.”

Imported from an open dataset — not yet checked against the printed edition.