Mark 10:37-41
10:37 They said to him, “Permit one of us to sit at your right hand and the other at your left in your glory.”
10:38 But Jesus said to them, “You don’t know what you are asking! Are you able to drink the cup I drink or be baptized with the baptism I experience?”
10:39 They said to him, “We are able.” Then Jesus said to them, “You will drink the cup I drink, and you will be baptized with the baptism I experience,
10:40 but to sit at my right or at my left is not mine to give. It is for those for whom it has been prepared.”
10:41 Now when the other ten heard this, they became angry with James and John.