2-3. They give the way of truth a bad name. They’re only out for themselves. They’ll say anything, anything, that sounds good to exploit you. They won’t, of course, get by with it. They’ll come to a bad end, for God has never just stood by and let that kind of thing go on.
20-22. If they’ve escaped from the slum of sin by experiencing our Master and Savior, Jesus Christ, and then slid back into that same old life again, they’re worse than if they had never left. Better not to have started out on the straight road to God than to start out and then turn back, repudiating the experience and the holy command. They prove the point of the proverbs, “A dog goes back to its own vomit” and “A scrubbed-up pig heads for the mud.”