The greatest among you should be like the youngest

Luke 22:14-30
And he took bread, gave thanks and broke it, and gave it to them, saying, “This is my body given for you; do this in remembrance of me.” In the same way, after the supper he took the cup, saying, “This cup is the new covenant in my blood, which is poured out for you. 
 But the hand of him who is going to betray me is with mine on the table.
But you are not to be like that. Instead, the greatest among you should be like the youngest, and the one who rules like the one who serves.  For who is greater, the one who is at the table or the one who serves? Is it not the one who is at the table? But I am among you as one who serves.
And I confer on you a kingdom, just as my Father conferred one on me, so that you may eat and drink at my table in my kingdom and sit on thrones, judging the twelve tribes of Israel.
Why?
Jesus set up Super let his disciples and followers do this in remember Jesus.
Jesus knew the one of them will betray him on the table.
In the kingdom of God the greatest should be like the youngest and the one who rules like the one who serves. It is not rule over them but to serve them. 
How?
Let me know the humble and do it like Jesus said, to serve others. For one who humbled will be raised.