Matthew 20:26-28 (ESV)
It shall not be so among you. But whoever would be great among you must be your servant, [27] and whoever would be first among you must be your slave, [28] even as the Son of Man came not to be served but to serve, and to give his life as a ransom for many."
There is no higher ruler, who came to serve man. True, He is not man's servant. But He set the standard. All true rulers serve those over whom they rule.
Perhaps we have twisted the concept of ruling. Of course, we have twisted just about everything else.
Shalom.