Christ gives to his own people clear testimonies of his very present power. Yet his Kingdom lies hidden in the earth, so to speak, under the lowness of the flesh. It is right, therefore, that faith be called to ponder that visible presence of Christ which he will manifest on the Last Day. For he will come down from heaven in the same visible form in which he was seen to ascend. And he will appear to all with the ineffable majesty of his Kingdom, with the glow of immortality, with the boundless power of divinity, with a guard of angels. From thence we are commanded to await him as our Redeemer on that day when he will separate the lambs from the goats, the elect from the reprobate. No one--living or dead--shall escape his judgment. The sound of the trumpet will be heard from the ends of the earth, and by it all will be summoned before his judgment seat, both those still alive at that day and those whom death had previously taken from the company of the living.

John Calvin, Calvin: Institutes of the Christian Religion, trans. from the 1559 Latin ed. by Ford Lewis Battles, 2 vols., in Library of Christian Classics, ed. John T. McNeill (Philadelphia: The Westminster Press, 1960), Book II, chapter 16, section 17 (volume 1, pp. 525-526).