A.T. Robertson Commentary 1 Timothy 1:20

"of whom is Hymenaeus and Alexander; whom I delivered unto Satan, that they might be taught not to blaspheme." — 1 Timothy 1:20 (ASV)

Hymenaeus (Hυμεναιος). The same heretic reappears in 2 Timothy 2:17. He and Alexander are the chief "wreckers" of faith in Ephesus.

Alexander (Αλεξανδρος). Probably the same as the one in 2 Timothy 4:14, but not the Jew of that name in Ac 19:33, unless he had become a Christian since then.

I delivered unto Satan (παρεδωκα τω Σατανα). See this very idiom (παραδουνα τω Σατανα) in 1 Corinthians 5:5. It is a severe discipline of apostolic authority, apparently exclusion and more than mere abandonment (1 Thessalonians 2:18; 1 Corinthians 5:11; 2 Corinthians 2:11), though it is an obscure matter.

That they might be taught not to blaspheme (ινα παιδευθωσιν μη βλασφημειν). Purpose clause with ινα and first aorist passive subjunctive of παιδευω. For this use of this common late verb, see 1 Corinthians 11:32; 2 Corinthians 6:9.