This is indeed our missionary message, the everlasting Gospel of One who came, who died on the Cross, who arose from the dead, ascended to heaven, and who is coming again. From Bethlehem and Calvary, from the empty tomb and from the clouds that hide Him from view, there streams the light of eternity. The great ellipse that includes the content of our faith and of our message to the world may be drawn as widely as possible, but it always has and always will have two foci--the Death and the Resurrection of Jesus Christ, and their relation to man's sin and his eternal destiny. This is the gospel of the Resurrection.
Samuel Zwemer, The Glory of The Cross