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 I drink or be baptized with the baptism I experience?”

Mark 11:33

11:33 So they answered Jesus, “We don’t know.” Then Jesus said to them, “Neither will I tell you by what authority I am doing these things.”

Mark 13:23

13:23 Be careful! I have told you everything ahead of time.