I had an interesting experience with my smartphone the other day – somehow I got sap on the screen. We were out of town at the time so I tried some soap and water at our hotel room. Oops. Made it worse by not only not taking it off but also spreading it around. Kind of like Lady MacBeth trying in vain to get the (invisible) blood off her hands;

Out, damned spot! Out, I say! …What, will these hands ne’er be clean? – Shakespeare, Macbeth, Act 5, Scene 1.

When we got home, June suggested I try acetone as found in nail polish remover. And here’s the thing: I got the acetone and some gauze preparing to work on it for a few minutes, and as soon as the acetone-dampened gauze hit the screen, the sap disappeared. Nearly instantly! I was amazed at how fast it worked – how fast the right product worked.

What can wash away my sin? Nothing but the blood of Jesus. – Old Hymn

But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin. (1 John 1.7, ESV)