When we turn to the New Testament, we pass from the climate of prediction to that of fulfillment. The things which God had foreshadowed by the lips of His holy prophets He has now, in part at least, brought to accomplishment. The Eschaton, described from afar...has in Jesus registered its advent. The supreme sign of the Eschaton is the Resurrection of Jesus and the descent of the Holy Spirit on the Church. The Resurrection of Jesus is not simply a sign which God has granted in favour of His Son, but is the inauguration, the entrance into history, of the times of the End.
Eschatology in the New Testament, 1957