2 But there were also false prophets among the people, as there will be false teachers among you also, who will bring in ⌊destructive heresies⌋a, even denying the Master who bought them, thus* bringing on themselves swift destruction. 2 And many will follow their licentious ways, because of whom the way of truth will be reviled. 3 And in greediness they will exploit you with false words, whose condemnation from long ago is not idle, and their destruction is not asleep.
Literally “heresies of destruction”
Here “thus” is supplied as a component of the participle (“bringing on”) which is understood as result