Who killed Jesus?
Pontius Pilate, with cooperation from some Jewish leaders in Jerusalem, killed Jesus. What killed Jesus? On the historical level one can point to the sinful social structures of first-century Palestine and the spiral of violence that led Pilate to view Jesus as a dangerous Jewish rebel. On the theological level one can say that Jesus' death on the cross was the result of human sinfulness.
Why did Jesus die? The New Testament writers give several theological responses. Jesus died in accord with the Scriptures as the expression of God's will (Matthew). Jesus died a sacrificial death for us and for our sins (Mark, Paul, and Hebrews). Jesus in his death gave us an example of fidelity in suffering (Luke). Jesus' death was part of his revelation of God and of his glorious return to the Father (John), and the pledge of his second coming (Revelation).
"To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.
Ralph Waldo Emerson