What did Jesus achieve? Jews at the time of Jesus expected the messiah to achieve a number to things: to defeat the enemies of Israel; to restore the Temple; to gather the exiles of Israel; and to teach the Torah to the nations.
The earliest Christians, who were Jewish by and large, saw Jesus as fulfilling these expectations, but in unexpected ways. Jesus had taught that Satan was their true enemy, not Rome; that he would rebuild the Temple on the third day; that he had come for the lost sheep of Israel; and that his word would never fade. His disciples saw Jesus as fulfilling these messianic expectations through his life, death, and resurrection.
Throughout the ages, Christians have tended to drill down into different aspects of this. Some have tended to emphasise Jesus as warrior, defeating Satan and freeing God’s people; some have tended to emphasise Jesus as prophet, teaching God’s wisdom and modelling God’s ways; some have tended to emphasise Jesus as priest, offering himself as a sacrifice for our injustices. Each of these ways explains an aspect of his achievement, of the different ways in which the Messiah, Jesus, mediates between divinity and humanity.