Mark 10:38

35 James and John, the sons of Zebedee, came near to him, saying, "Teacher, we want you to do for us whatever we will ask."

36 He said to them, "What do you want me to do for you?"

37 They said to him, "Grant to us that we may sit, one at your right hand, and one at your left hand, in your glory."

38 But Jesus said to them, "You don`t know what you ask. Are you able to drink the cup that I drink, and to be baptized with the baptism that I am baptized with?"

39 They said to him, "We are able." Jesus said to them, "You shall indeed drink the cup that I drink, and you shall be baptized with the baptism that I am baptized with;

40 but to sit at my right hand and at my left hand is not mine to give, but for whom it has been prepared."

41 When the ten heard it, they began to be moved with indignation towards James and John.