Mark 10:38 in the 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
37 They said to him, “Grant to us that we may sit, one at your right hand and one at your left hand, in your glory.”
38 But Jesus said to them, “You don’t know what you are asking. Are you able to drink the cup that I drink, and to be baptized with the baptism that I am baptized with?”
39 They said to him, “We are able.” Jesus said to them, “You shall indeed drink the cup that I drink, and you shall be baptized with the baptism that I am baptized with;