Your boasting is not good. Do you not know that a little leaven leavens the whole lump?
6. Your glorying is not good. He condemns their glorying, not simply because they extolled themselves beyond what is lawful for man, but because they delighted themselves in their faults. He had previously stripped mankind of all glory; for he had shown that, as they have nothing of their own, whatever excellence they may have, they owe the entire praise of it to God alone.
Here the apostle states the case; and, I. Lets them know what was the common or general report concerning them, that one of their community was guilty of fornication, Co1 5:1. It was told in all places, to their dishonour, and the reproach of Christians. And it was the more reproachful because it could not be denied. Note, The heinous sins of professed Christians are quickly noted and noised abroad.
Commenting on 1 Corinthians 5:1-6
Your glorying is not good,.... Their glorying in their outward flourishing condition, in their riches and wealth, and in their ministers, in their wisdom and parts when under such an humbling dispensation; and especially if their glorying was in the sin itself, and their connivance at it, it was far from being good, it was very criminal, as the consequence of it was dangerous: know...