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.
My God - implying resignation to the will of God, as being his God, however trying the humiliation in store for him.
Will humble me. The indicative implies that it will actually be so. The faithful pastor is 'humbled' at, and 'bewails,' the falls of his people, as his own. Sinned already - before his second visit, in which he had much to rebuke.
Uncleanness. Contempt for authority of pastors tends to unbridled licentiousness (1 Thessalonians 4:7).