But Jesus said unto them,
You know not what you ask: can you drink of the cup that I drink of? and be baptized with the baptism that I am baptized with?
Read Chapter 10
Augustine of Hippo
AD 430
He meant, of course, the cup of humility and suffering. .
Or be baptised with the baptism wherewith I am baptized. Christ calls His Passion a baptism, because He was to be evidently immersed and drowned in it, according to what David says of himself, but much more of Christ ( Psalm 69:12), "Save me, 0 God; for the waters are come in unto my soul. I sink in deep mire, where there is no standing: I am come into deep waters, where the floods overflow me."
This, he says, is what is spoken by the Saviour: "If ye do not drink my blood, and eat my flesh, ye will not enter into the kingdom of heaven; but even though "He says, "ye drink of the cup which I drink of, whither I go, ye cannot enter there."
Moreover, they affirm that the Lord added this redemption to the sons of Zebedee, when their mother asked that they might sit, the one on His right hand, and the other on His left, in His kingdom, saying, "Can ye be baptized with the baptism which I shall be baptized with? "
Do you see? They did not understand what they were asking for when they were talking to him about crowns and rewards and the privilege of the first seats and honors even before the contest had begun. Christ was communicating with them on two levels when he said: “You do not know what you are asking for.” One was that they were talking about an earthly kingdom and he had said nothing about this. There had been no announcement or promise about a visible kingdom on earth. The other was that, when they sought at this time the privilege of the first seats and the honors of heaven, when they wished to be seen as more illustrious and splendid than the others, they were not asking for these things at the right time. The timing was precisely wrong. For this was not the right time for crowns or prizes. It was the time for struggles, contests, toils, sweat, wrestling rings and battles.
This he calls a baptism, showing that from it the whole world would receive a great purification. Then they say to him: “We can.” In the fervor of their spirit they promise immediately, not knowing what they said, but looking to obtain that which they were asking…. He foretold great things for them; that is, you shall be held worthy of martyrdom, you shall suffer the things I have suffered, you shall end your life with a death from violence, and in this also you shall be sharers with me. The Gospel of St. Matthew, Homily
Here Christ was calling his crucifixion a cup and his death a baptism. He called his cross a cup because he was coming to it with pleasure. He called his death a baptism because by it he cleansed the world. Not only on this account did he call his death a baptism but also because of the ease with which he would rise again. For just as one who is baptized in water easily rises up because the nature of the water poses no hindrance, so, too, Christ rose with greater ease because he had gone down into death. And this is why he calls his death a baptism.
For when we immerse our heads in the water, the old humanity is buried as in a tomb below, and wholly sunk forever. Then as we raise them again, the new humanity rises in its place. As it is easy for us to dip and to lift our heads again, so it is easy for God to bury the old humanity, and to lift up and display the new. And this is done three times, that you may learn that the power of the Father, the Son and the Holy Ghost fulfills all this.
Or sacrifice, and prepared to be an acceptable burnt-offering unto God, looked up to heaven, and said, "O Lord God Almighty, the Father of thy beloved and blessed Son Jesus Christ, by whom we have received the knowledge of Thee, the God of angels and powers, and of every creature, and of the whole race of the righteous who live before thee, I give Thee thanks that Thou hast counted me, worthy of this day and this hour, that I should have a part in the number of Thy martyrs, in the cup
Also according to Mark He said, with the same purpose, to the sons of Zebedee: "Are ye able to drink of the cup which I drink of, or to be baptized with the baptism wherewith I am baptized? "
I bless you, Lord, because you have deemed me worthy of this day and hour, to take my part in the number of the martyrs, in the cup of your Christ, for “resurrection to eternal life” of soul and body in the immortality of the Holy Spirit; among whom may I be received in your presence this day as a rich and acceptable sacrifice, just as you have prepared and revealed beforehand and fulfilled, O you who are the true God without any falsehood.