Jesus not only taught the principle of the kernel of wheat, he practiced it. Jesus gave up all his glory as God, who is infinite, eternal and almighty to come into this world in human flesh. He was like a seed falling to the ground. He was born in a manger and became poor in order to make us rich. He served all kinds of sinners, pouring out his life, love and energy for their sake. He set an example of life-giving service for people of all generations to follow. More than that, he died on the cross, shedding his blood to save us from sin and eternal condemnation. This is how Jesus became a kernel of wheat.