Mark 10:38
King James Version
“But Jesus said unto them, Ye know not what ye ask: can ye drink of the cup that I drink of? and be baptized with the baptism that I am baptized with?”
Context
35And James and John, the sons of Zebedee, come unto him, saying, Master, we would that thou shouldest do for us whatsoever we shall desire.
36And he said unto them, What would ye that I should do for you?
37They said unto him, Grant unto us that we may sit, one on thy right hand, and the other on thy left hand, in thy glory.
38But Jesus said unto them, Ye know not what ye ask: can ye drink of the cup that I drink of? and be baptized with the baptism that I am baptized with?
39And they said unto him, We can. And Jesus said unto them, Ye shall indeed drink of the cup that I drink of; and with the baptism that I am baptized withal shall ye be baptized:
40But to sit on my right hand and on my left hand is not mine to give; but for whom it is prepared.
41And when the ten heard they began to be much displeased with James and John.