Matthew 20 : 20-28

Then the mother of James and John came to Jesus with her sons, and she knelt down, to ask a favour. Jesus said to her, “What do you want?” And she answered, “Here You have my two sons. Grant that they may sit, one at Your right hand and One at Your left, when You are in Your kingdom.”

Jesus said to the brothers, “You do not know what you are asking. Can you drink the cup that I am about to drink?” They answered, “We can.” Jesus replied, “You will indeed drink My cup, but to sit at My right or at My left is not for Me to grant. That will be for those for whom My Father has prepared it.”

The other ten heard all this, and were angry with the two brothers. Then Jesus called them to Him and said, “You know that the rulers of the nations act as tyrants over them, and the powerful oppress them. It shall not be so among you : whoever wants to be more important in your community shall make himself your servant. And if you want to be the first of all, make yourself the servant of all. Be like the Son of Man who has come, not to be served but to serve, and to give His life to redeem many.”