Mark 10:35-38

And James and John, the sons of Zebedee, came up 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.” 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?”