Mark 10:35-40

35Then James and John, the sons of Zebedee, came to Him, saying, “Teacher, we want You to do for us whatever we ask.”

36And He said to them, “What do you want Me to do for you?”

37They said to Him, “Grant us that we may sit, one on Your right hand and the other on Your left, in Your glory.”

38But Jesus said to them, “You do not know what you ask. Are you able to drink the cup that I drink, and be baptized with the baptism that I am baptized with?”

39They said to Him, “We are able.” So Jesus said to them, “You will indeed drink the cup that I drink, and with the baptism I am baptized with you will be baptized;

40but to sit on My right hand and on My left is not Mine to give, but it is for those for whom it is prepared.”