To be a servant of others the way he was. Do act the way he did at the last supper, when he got down on his knees and washed the disciples feet. But let's think what that would look like in the various arenas in which we operate. The book of James has a lot to say about power in the church. The first reading today said a bit about it.
Teachers are to be careful how they use their authority because they'll be judged more strictly.
He warns about the use of the tongue for wielding power. He warns those who think they're wise but are really working from selfish ambition. He says true wisdom is pure, peaceable, gentle, willing to yield, full of mercy and good fruits, without a trace of partiality or hypocrisy. Earlier in his letter he warns about showing partiality to those who are rich, and in claiming faith in Christ when your works don't match up. One of the saddest things you can hear is that a Church has been split apart because of some power play that's been going on there.