Jesus reserved His strongest words for the spiritual leaders of His day. He put no pressure on the masses to submit to their leaders but instead put the pressure on leaders to be slaves of all.
The principle of being servant (the word is "slave" in Greek) to all is devastating to chains of command and systems where submission is upward. In God's kingdom, the power pyramid is reversed, up-ended, so that authority is on the bottom, not the top. 
He Came, He Saw, He Served
by Roy Thompson
"As an individual develops and fulfills his purpose as a servant, both the individual and the organization benefit."
Leading With Authority
by Peter Chao
Peter Chao gives us some biblical insights into the makeup of these trailblazers.
