2 The evening meal was in progress, and the devil had already put into the heart of Judas Iscariot, Simon’s son, that he should betray Jesus. 3 Because Jesus knew that the Father had handed all things over to him, and that he had come from God and was going back to God, 4 he got up from the meal, removed his outer clothes, took a towel and tied it around himself. 5 He poured water into the washbasin and began to wash the disciples’ feet and to dry them with the towel he had wrapped around himself.

John 13:1-17 (NET)