Most scholars agree that the English word Maundy in that name for the day is derived through Middle English and Old French mandé, from the Latin mandatum, the first word of the phrase "Mandatum novum do vobis ut diligatis invicem sicut dilexi vos" ("A new commandment I give unto you, That ye love one another; as I have loved you"), the statement by Jesus in the Gospel of John 13:34 by which Jesus explained to the Apostles the significance of his action of washing their feet.
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My sermon this evening, during our Tennebrae, Communion and Footwashing service, is probably my shortest ever. It is based on the readings below, which I sum up in 23 words.
Jesus asks us to receive the sacrament of Holy Communion, to wash one another’s feet and to pray. Let’s do these things often!
23 For I received from the Lord what I also passed on to you: The Lord Jesus, on the night he was betrayed, took bread, 24 and when he had given thanks, he broke it and said, “This is my body, which is for you; do this in remembrance of me.” 25 In the same way, after supper he took the cup, saying, “This cup is the new covenant in my blood; do this, whenever you drink it, in remembrance of me.” 26 For whenever you eat this bread and drink this cup, you proclaim the Lord’s death until he comes.
13 It was just before the Passover Festival. Jesus knew that the hour had come for him to leave this world and go to the Father. Having loved his own who were in the world, he loved them to the end. 2 The evening meal was in progress, and the devil had already prompted Judas, the son of Simon Iscariot, to betray Jesus. 3 Jesus knew that the Father had put all things under his power, and that he had come from God and was returning to God; 4 so he got up from the meal, took off his outer clothing, and wrapped a towel around his waist. 5 After that, he poured water into a basin and began to wash his disciples’ feet, drying them with the towel that was wrapped around him…12 When he had finished washing their feet, he put on his clothes and returned to his place. “ Now that I, your Lord and Teacher, have washed your feet, you also should wash one another’s feet. 15 I have set you an example that you should do as I have done for you. 16 Very truly I tell you, no servant is greater than his master, nor is a messenger greater than the one who sent him. 17 Now that you know these things, you will be blessed if you do them.”
39 Jesus went out as usual to the Mount of Olives, and his disciples followed him. 40 On reaching the place, he said to them, “Pray that you will not fall into temptation.” 41 He withdrew about a stone’s throw beyond them, knelt down and prayed, 42 “Father, if you are willing, take this cup from me; yet not my will, but yours be done.” 43 An angel from heaven appeared to him and strengthened him. 44 And being in anguish, he prayed more earnestly, and his sweat was like drops of blood falling to the ground.
45 When he rose from prayer and went back to the disciples, he found them asleep, exhausted from sorrow. 46 “Why are you sleeping?” he asked them. “Get up and pray so that you will not fall into temptation.”