In 2 Timothy 3:13, evil people progress from bad to worse — consistent with the spreading corruption of false teaching here.

1 Timothy 1:20 names Hymenaeus as one Paul handed over to Satan — directly identifying the false teacher mentioned here.

Matthew 16:6 uses 'leaven' as a spreading metaphor for false teaching — parallels the gangrene imagery of false doctrine.

Acts 20:30 warns of men distorting truth to draw disciples — the same danger as Hymenaeus and Philetus here.

1 Corinthians 5:6 uses leaven spreading through the whole batch — the same corrupting spread as gangrene here.

Galatians 5:9 repeats the leaven metaphor — same corrupting spread as gangrene here.

Hebrews 12:15 warns of a 'root of bitterness' that spreads and defiles — analogous to the gangrene-like spread of false teaching here.

2 Corinthians 11:13 identifies false apostles — the same category of false teachers as Hymenaeus and Philetus here.

Ephesians 4:14 warns of being tossed by every wind of doctrine — the kind of false teaching that spreads like gangrene here.

Colossians 2:8 warns against empty deceit taking people captive — the same threat as the spreading gangrene here.