Bible Verses About National Sins: Saints especially mourn over

Therefore also now, saith the LORD, turn ye even to me with all your heart, and with fasting, and with weeping, and with mourning:

Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil;

Cry aloud, spare not, lift up thy voice like a trumpet, and shew my people their transgression, and the house of Jacob their sins.

But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.

And he shall give Israel up because of the sins of Jeroboam, who did sin, and who made Israel to sin.