Isaiah 1:16-18

16 Wash yourselves, make yourselves clean; put away the evil of your doings from before My eyes; cease to do evil;

17 learn to do good; seek judgment, reprove the oppressor. Judge the orphan, plead for the widow.

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