2 Corinthians 12:21
And lest, when I come again, my God will humble me among you, and that I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed. And lest, when I come again, my God will humble me among you, and that I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed.
Paul feared that when he came again to Corinth his God would humble him among the believers there. The humbling he dreaded was finding many who had already sinned in uncleanness and fornication and lasciviousness still unrepentant. Their continuance in those sins and their refusal to repent would cause him to mourn over them.