Isaiah 1:20 (KJV)

And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood.

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

Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.

Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.

If ye be willing and obedient, ye shall eat the good of the land:

How is the faithful city become an harlot! it was full of judgment; righteousness lodged in it; but now murderers.

Thy silver is become dross, thy wine mixed with water:

Thy princes are rebellious, and companions of thieves: every one loveth gifts, and followeth after rewards: they judge not the fatherless, neither doth the cause of the widow come unto them.

Therefore saith the LORD, the LORD of hosts, the mighty One of Israel, Ah, I will ease me of mine adversaries, and avenge me of mine enemies:

And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin: