Augustine against the pseudo-mercy crowd of thieves, who strip men of their souls:
“Those people who continue to the end of their lives in the fellowship of the Catholic Church have no reason to feel secure, if their moral behaviour is disreputable and deserving of condemnation…. By the wickedness of their lives, they desert Christ” (City of God, XXI, chap. 25)
The whole of Book XXI should be read by everyone, esp. in this dark hour overshadowing us all.