I find this one of the most chilling and moving passages from Scripture. Great weight hangs on every word. The final answer of Jesus falls like a guillotine. Mark’s Gospel, chapter 10.

And James and John, the sons of Zebedee, came forward to him , and said to him, “Teacher, we want you to do for us whatever we ask of you.” And he said to them, “What do you want me to do for you?” And they said to him, “Grant us to sit, one at your right hand and one at your left, in your glory.” But Jesus said to them, “You do not know what you are asking. Are you able to drink the cup that I drink, or to be baptized with the baptism with which I am baptized?” And they said to him, “We are able.” And Jesus said to them, “The cup that I dirnk you will drink; and with the baptism with which I am baptized, you will be baptized; but to sit at my right hand or at my left is not mine to grant, but it is for those for whom it has been prepared.”