which also refers to the death of Christ ὑπὲρ ἡμῶν, no reference is made to Christ’s sinlessness, only to human sinfulness (ἁμαρτωλῶν ὄντων ἡμῶν), but ὁ δίκαιος could legitimately be added to Χριστός (cf. 1 Pet. 3:18, δίκαιος ὑπὲρ ἀδίκων). Here in v. 21, reference is made to Christ’s sinlessness but not to human sinfulness, but ὄντων ἁμαρτωλῶν (cf. Rom. 5:8) or ὄντων ἐχθρῶν (cf. Rom. 5:10) or ὄντων νεκρῶν τοῖς παραπτώμασιν (cf. Eph. 2:5) could appropriately be added
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