Mark 10:38-40

38But Jesus said to them, “You do not know what you are asking. Are you able to drink the cup that I drink, or be baptized with the baptism that I am baptized with?”39They replied, “We are able.” Then Jesus said to them, “The cup that I drink you will drink; and with the baptism with which I am baptized, you will be baptized;40but 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.”