Mark 10:38

35 And there came to him James and John, the sons of Zebedee, saying to him, Master, will you give us whatever may be our request?

36 And he said to them, What would you have me do for you?

37 And they said to him, Let us be seated, one at your right hand and one at your left, in your glory.

38 But Jesus said to them, You have no knowledge of what you are saying. Are you able to take of my cup? or to undergo the baptism which I am to undergo?

39 And they said to him, We are able. And Jesus said to them, You will take of the cup from which I take; and the baptism which I am about to undergo you will undergo:

40 But to be seated at my right hand or at my left is not for me to give: but it is for those for whom it has been made ready.

41 And hearing this, the ten became very angry with James and John.