Forgiveness of sins

I've been thinking alot recently about the Brethren tradition of the love feast. In their congregations, it is the third sacrament, consisting of celebrating together like at the Last Supper, and washing each other's feet. It lifts up this act from a rather esoteric display of servanthood to something central to the faith, where I feel it should be.
But there's more than service to the washing of feet; it's a physical manifestation of God's forgiveness to us. Christ took the nastiest, dirtiest part of what we see about each other, and made them clean and pure again himself. Ingrown toenails, athlete's foot, grime and dirt - all were washed away. It's very similar to God washes us clean of our sins, those nastiest parts of our personalities and lives. I wish more people practiced the love feast; it's strong imagery.