Ambrose of Milan

Heaven is of the world, man above the world; for the former is a portion of the world, the latter is an inhabitant of Paradise, and the possession of Christ. Heaven is thought to be undecaying, yet it passes away; man is deemed to be incorruptible, yet he puts on incorruption; the fashion of the first perishes, the latter rises again as being immortal; yet the hands of the Lord, according to the authority of Scripture, formed them both. For as we read of the heavens, "And the heavens are the work of Thy hands;" so also man says, "Thy hands have made me and fashioned me;" and again, "The heavens declare the glory of God." And as the heaven is resplendent with stars, so are men bright with the light of good works, for their works shine before their Father Which is in heaven. The former is the firmament of heaven which is on high, and the latter firmament is not unlike to it, whereof it is said, "Upon this rock will I build My Church;" the one is the firmament of the elements, the other of virtues, and the last is more excellent; "they sucked honey out of the firm rock," for "the Rock" is the flesh "of Christ," which redeemed the heaven and the whole world.