In John 12:32 Jesus says "But I, when I am lifted up from the earth, will draw all men to myself". Jesus said this showing the kind of death he was going to die, John narrates in the next verse. The message that Jesus was proclaiming was bringing him into a direct conflict with the revolutionary agenda of the social leaders, it was exposing the hypocrisy and oppressiveness of its supposed shepherds, Jesus was showing the true way of being Israel, a light to the nations, yet it was leading to a Roman cross. His "kingdom" was going to be established, the great battle was to be fought, and won, though in an unexpected way. It would be achieved in His crucifixion and resurrection.
I am amazed, though probably shouldn't be, of the profound prophetic statement of my Lord. His being "lifted up", in crucifixion, would be a drawing power to transcend centuries and cultures, to draw all people to Him. His "kingdom" has and will continue to outlast all others. His kingdom advances not by a "superior force" but by a different sort of power altogether, the power of sacrificial love. He as "King" is willing to serve and die in the place of even His enemies. He serves his disciples, and even Judas, in John 13 by washing their feet. Then says this was done as an example for us to follow (John 13:15).
His kind of sacrificial love is for us to learn and grow in. To do this means hopefully to point others to him, bringing healing into this world and grow ourselves.