" Remember that the Person standing there and making this statement is the ultimate example of true greatness Himself. And this is exactly what Jesus goes on to make clear: “For even the Son of Man came not to be served but to serve, and to give his life as a ransom for many” (v. 45). In his excellent commentary on this passage, William Lane notes that Jesus is referring to “the reversal of all human ideas of greatness and rank.”2 A profound and historic reversal is taking place here—one that has to occur in each of our lives if we’re to have any possibility of becoming truly great in God’s eyes. It means turning upside down our entrenched, worldly ideas on the definition of greatness. "

― C.J. Mahaney , Humility: True Greatness