"So after He had washed their feet, and had taken His garments, and was set down again, He said unto them, Know ye what I have done to you?
Ye call me Master and Lord: and ye say well; for so I am.
If I then, your Lord and Master, have washed your feet; ye also ought to wash one another's feet.
For I have given you an example, that ye should do as I have done to you.
Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than He that sent him...
And a new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.
By this shall all men know that ye are My disciples, if ye have love one to another." - John 13:11-16, 34 -35