Isa 1:15-18

15When you stretch out your hands, I will hide my eyes from you; even though you make many prayers, I will not listen; your hands are full of blood.16Wash yourselves; make yourselves clean; remove the evil of your doings from before my eyes; cease to do evil,17learn to do good; seek justice, rescue the oppressed, defend the orphan, plead for the widow. 18Come now, let us argue it out, says the Lord: though your sins are like scarlet, they shall be like snow; though they are red like crimson, they shall become like wool.