2 And supper was already taking place; the devil had already put it into the heart of Judas, son of Simon Iscariot, that he should betray Him.
3 Knowing that the Father had given all things into His hands, and that He had come from God and going to God,
4 He got up from the supper and laid aside His clothes, and having taken a towel He tied it around Himself.
What followed next in this chapter is one of those well known and loved incidents that took place during the ministry of Jesus.
It is when Jesus washed the feet of His disciples.
It is an event that impacts us in various ways, ranging from shame and guilt, because we may not be like Jesus, to inspiring us to press on to become more like Him.
From what John said it would seem as though the washing of the disciples feet interrupted their supper, or Passover Meal, since John states that supper was already taking place.
Some translations state that the supper had ended. It is difficult to reconcile this with the fact that later in the chapter the meal was still in progress. This was where Jesus tells the disciples that He will identify His betrayer by dipping the bread into the wine and giving it to him: Then Jesus answered: “It is the one to whom I will give the bit (of bread) that I will dip.” Having dipped the bit (of bread) He took it and gave it to Judas, Simon Iscariot.
From this it would seem obvious that the Passover Meal was still in progress.
Other translations say that it was during supper. Still others say that the supper time had come, implying that they were ready for supper.
From this it is obvious that there is a certain amount of uncertainty as to how to translate the beginning of verse two. However, it does seem that a number of translations state that the supper was in progress when Jesus took the towel and began to wash the feet of the disciples.
It is important for us to get into the context of the events as they took place in the Upper Room. The Passover Meal was in progress from the beginning of chapter 13. All that Jesus said and did was in the context of the Meal that celebrated God delivering His people from the bondage to Egypt.
We celebrate the Breaking of Bread to celebrate and remember that Jesus has delivered us from bondage to sin and selfishness.