All went according to plan, and Peter and John remained at the house until the evening when Jesus came with the rest of the disciples.  In that way the secret of where they were to assemble was kept from Judas until the last minute and that was due largely to the man with the jar of water: he was an essential part of the plan.  Without him Jesus might well have been arrested before he had time to institute the Eucharist.

And yet, apart from this incident, we know nothing about him, not even his name.  He suddenly appears, faithfully does his humble duty, and as quickly disappears.  Among the great names of the Passion narrative he goes unnoticed – just an ordinary, trustworthy man who served Jesus in a very humble fashion by bearing a jar of water.