No one wants to touch or drink from a dirty cup. The symbolism applies spiritually. We may deny spiritually where we are, but others can see. God looks down and sees what's INSIDE the cup. A reminder for us all. Consecration and sanctification are required for proper function and washing our own cup is a process. Dirty cups represent rebellion against God. Jesus Christ cleaned out the temple that had allowed dirty practices. Let our cup remain clean, wholly acceptable to God.
