There are many reasons why the modern Christian and even the modern theologian may hesitate to give to the doctrine of Christ’s Second Coming that emphasis which was usually laid on it by our ancestors. Yet it seems to me impossible to retain in any recognisable form our belief in the Divinity of Christ and the truth of the Christian revelation while abandoning, or even persistently neglecting, the promised, and threatened, Return. “He shall come again to judge the quick and the dead,” says the Apostles’ Creed. “This same Jesus,” said the angels in Acts, “shall so come in like manner as ye have seen him go into heaven.” “Hereafter,” said our Lord himself (by those words inviting crucifixion), “shall ye see the Son of Man... coming in the clouds of heaven.” If this is not an integral part of the faith once given to the saints, I do not know what is.
C.S. Lewis, "The World's Last Night" (1960) [Image: Christ the Redeemer statue, Corcovado Mountain, Rio de Janeiro, Brazil]