Jesus knew that it was the night of his betrayal and that the very next morning he would suffer on a cross for the sins of the world. He wouid from out viewpoint, have had every reason to be preoccupied with his imminent sufferings. Yet Jesus took time to tend to a duty -washing the feet of guests – that was usually left to the lowest servant in a household. He did this with full awareness of his own divine dignity.
It was not in spite of his greatness but because His greatness that Jesus served his disciples on that evening. His own attitude toward servanthood, that true greatness in the Kingdom of God consists not in position or authority but in serving one another. If we are to master the scriptures principles of true biblical fellowship we must master this one: True greatness in the Kingdom of Heaven consists in serving one another. Jesus said ‘Whoever wants to become great among you must be your servants’ Matthew 20:26
From the book "True Fellowship"