Thou blind Pharisee, cleanse first the inside of the cup and platter, that the outside . . . may be clean also. Matt. xxiii 26;

and in Isaiah:

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

Though your sins be as scarlet, they shall be white as snow; though they be red like crimson, they shall be as wool. Isa. i 16, 18.