There’s this surprising passage in John 19. But if you’ve followed the Christ story up until this point it’s not really surprising at all.
After all, this is the same Jesus who just a few chapters beforehand had taken it upon himself to wash the feet of his disciples. Imagine — God in flesh; the very one who flung the stars into space, who formed our planet and breathed the breath of life into mankind living and walking among us. The same hands that healed the blind, calmed the storm, raised the dead . . . washing feet.
The Creator serving the creation.
And then this teaching in John 13:14-15 — “Now that I, your Lord and Teacher, have washed your feet, you also should wash one another’s feet. I have set you an example that you should do as I have done for you.”
Simply put: if the God of the universe is willing to wash the feet of his servants, shouldn’t we do the same?

On this Martin Luther King, Jr. day, 

