The Shepherd of Hermas

Those who have the small cracks are those who have quarrels with one another, and are withered in the faith from their evil speaking. But many of these repented, and the rest shall also repent when they hear my commandments, for their evil-speaking was small and they will quickly repent.

But those who have great cracks are those who are persistent in their evil-speaking, and are become malicious in their rage against one another. These then were cast away from the tower and were rejected from its building. Such men then will live with difficulty.