I always rinse my cup between tea flavors or between days, but I don't give it a thorough cleaning or scrubbing often.
Scum builds up. Yuck.
|My dear and stained "tea" mug|
It stains the inside. It stays so long that it seems to be a permanent stain.
With a little elbow grease, most of it comes out. There's some wedged in the seams, but the cup looks practically new.
|The cleaned area and the stained/scummy area|
Likewise, in my life, sometimes my heart gets scummy. Sometimes I don't rinse my sins in the blood of the Lamb* often enough. Sometimes the scum seems to become a part of me.
With a little humility and quality time with God, it comes out. Fresh and pure.
*Jesus is considered the "Lamb of God" and by Jesus living a sin-free life and dying for our sins, we are cleansed.