Mt 20:20-23
Of the sons of Zebedee approached him with her sons and did him homage, wishing to ask him for something. He said to her, "What do you wish?" She answered him, "Command that these two sons of mine sit, one at your right and the other at your left, in your kingdom." Jesus said in reply, "You do not know what you are asking. Can you drink the cup that I am going to drink?" They said to him, "We can." He replied, "My cup you will indeed drink, but to sit at my right and at my left (, this) is not mine to give but is for those for whom it has been prepared by my Father.".
