washing

I like the ideas of washing, cleansing, wind, etc. what else intrigues me is that it says we are washed in and by His blood. IT says in Isaiah:

"Though your sins are like scarlet, they shall be as white as snow; though they are red as crimson, they shall be like wool."
Blood is red and yet we are washed clean by His blood. Our scarlet and crimson stains are washed clean by His scarlet and crimson wounds.

What about using....................................... blood!!??? Any volunteers to donate some blood to the cause?