Yohana 13:12

Alipomaliza kuwanawisha miguu yao, alivaa tena mavazi yake, akarudi alikokuwa ameketi, akawauliza, “Je, mmeelewa nililowafanyia?

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?