(Jesus already knew who was going to betray him; that is why he said, "All of you, except one, are clean.")
After Jesus had washed their feet, he put his outer garment back on and returned to his place at the table. "Do you understand what I have just done to you?" he asked. 1
References for John 13:12
13.12-15 Lk 22.27.
"You call me Teacher and Lord, and it is right that you do so, because that is what I am.
I, your Lord and Teacher, have just washed your feet. You, then, should wash one another's feet.
I have set an example for you, so that you will do just what I have done for you.
I am telling you the truth: no slaves are greater than their master, and no messengers are greater than the one who sent them. 2
References for John 13:16
13.16 Mt 10.24; Lk 6.40; Jn 15.20.
Now that you know this truth, how happy you will be if you put it into practice!
"I am not talking about all of you; I know those I have chosen. But the scripture must come true that says, "The man who shared my food turned against me.' 3
References for John 13:18
13.18 Ps 41.9.
I tell you this now before it happens, so that when it does happen, you will believe that "I Am Who I Am.'
I am telling you the truth: whoever receives anyone I send receives me also; and whoever receives me receives him who sent me." 4
References for John 13:20
13.20 Mt 10.40; Mk 9.37; Lk 9.48; 10.16.
After Jesus had said this, he was deeply troubled and declared openly, "I am telling you the truth: one of you is going to betray me."