1 Peter 3:9

μὴ … κακοῦ, from Romans 12:17; cf. 1 Thessalonians 5:15; Proverbs 20:22, Say not I will recompense evil (LXX τίσομαι τὸν ἐχθρόν): an approximation to Christ's repeal of the lex talionis (Matthew 5:38 ff.) which Plato first opposed among the Greeks (see Crito., p. 49, with Adam's note). λοιδορίαν ἀντὶ λοιδορίας refers to pattern left by Christ (1 Peter 2:23). τοὐναντίον, contrariwise. εὐλογοῦντες with λοιδ., 1 Corinthians 4:21; cf. Romans 12:14, εὐλογεῖτε τοὺς διώκοντας Luke 6:28. ὅτι … κληρονομήσητε, Christians must do as they hope to be done by. They are the new Israel called to inherit blessing in place of the Jews, who are reprobate like Esau; cf. Hebrews 12:17, ἴστε γὰρ ὅτι καὶ μετέπειτα θέλων κληρονομῆσαι τὴν εὐλογίαν ἀπεδοκιμάσθη. So St. Paul reverses the current view which identified the Jews with Isaac and the Gentiles with Ishmael (Galatians 4:22 ff.).