Philemon 1:10

ὃν ἐγέννησα : cf. Sanhedrin, xix. 2 (Jer. Talm.), “If one teaches the son of his neighbour the Law, the Scripture reckons this the same as if he had begotten him” (quoted by Vincent). Ὀνήσιμον : one would expect Ὀνησίμου it is attracted to ὃν … instead of agreeing with τοῦ ἐμοῦ τέκνου. He is to be ὀνήσιμος in future, no longer ἀνόνητος. ἄχρηστον : ἅπ. λεγ. in N.T., but used in the Septuagint, Hosea 8:8 2Ma 7:5, Wis 2:11; Wis 3:11, Sir 16:1; Sir 27:19. As applied to Onesimus the reference must be to something wrong done by him; the fear of being punished for this was presumably his reason for running away from his master. νυνὶ δὲ : a thoroughly Pauline expression, cf. Philemon 1:9; Romans 6:22; Romans 7:6; Romans 7:17; Romans 15:23; Romans 15:25; 1 Corinthians 5:11, etc. εὔχρηστον : only elsewhere in N.T. in 2Ti 2:21; 2 Timothy 4:11.