When the heaven is shut up, and there is no rain, because they have sinned against thee; yet if they pray toward this place, and confess thy name, and turn from their sin, when thou dost afflict them;
From a compound of a (as a negative particle) and a presumed selges (of uncertain derivation, but apparently meaning continent); licentiousness (sometimes including other vices) -- filthy, lasciviousness, wantonness.
KJV: 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.
NASB: I am afraid that when I come again my God may humiliate me before you, and I may mourn over many of those who have sinned in the past and not repented of the impurity, immorality and sensuality which they have practiced.