οὐκ ἐδοκίμασαν … εἰς ἀδόκιμον νοῦν: wordplay

Says The verse reads: "Since they did not approve (οὐκ ἐδοκίμασαν) to have God in knowledge (ἐν ἐπιγνώσει), God gave them over εἰς ἀδόκιμον νοῦν."

Says δοκιμάζω means "test, approve." Abbott-Smith lists Rom 1:28 under "to approve, think fit." ἀδόκιμος means "not standing the test, rejected." Paul uses it of what fails the test (1 Cor 9:27; 2 Cor 13:5–7).

Implies The punishment fits the sin. Because they judged God not worth acknowledging, God gave them over to a mind that fails every test, one that cannot judge rightly (contrast 12:2, εἰς τὸ δοκιμάζειν). The list of vices in 1:29–31 shows what that mind produces.

Uncertain Whether ἀδόκιμον is active ("undiscerning") or passive ("disqualified, rejected"). Paul's other uses favor the passive. The wordplay suggests both.