Mark 10:38

10:38 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?"
-World English Bible

Other Translation

10:38 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?
-King James Version