My proposal is that Jesus took his own story seriously - so seriously that, having recommended to his followers a particular way of being Israel-for-the-sake-of-the-world, he made that way thematic for his own sense of vocation, his own belief about how the kingdom would come through his own work. He would turn the other cheek; he would go the second mile; he would take up the cross. He would be the light of the world, the salt of the earth. he would be Israel for the sake of the world. He would be the means of the kingdom’s coming, both in that he would embody in himself the renewed Israel and in that he would defeat evil once and for all. But the way in which he would defeat evil would be the way consistent with the deeply subversive nature of his own kingdom-announcement. He would defeat evil by letting it do its worst to him.
N.T. Wright, Jesus and the Victory of God p. 576-577