Mark 10:38-40

38But 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?”

39They 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,

40but to sit at my right or at my left is not mine to give. It is for those for whom it has been prepared.”