Mc 10:35-38
Then James and John, the sons of Zebedee, came to him and said to him, "Teacher, we want you to do for us whatever we ask of you." He replied, "What do you wish (me) to do for you?" They answered him, "Grant that in your glory we may sit one at your right and the other at your left." Jesus said to them, "You do not know what you are asking. Can you drink the cup that I drink or be baptized with the baptism with which I am baptized?".