Accordingly the Spirit, admiring such as soar up to the celestial realms by these ascensions, says, "They fly, as if they were kites; they fly as clouds, and as young doves, unto me" -that is, simply like a dove. For we shall, according to the apostle, be caught up into the clouds to meet the Lord (even the Son of man, who shall come in the clouds, according to Daniel ) and so shall we ever be with the Lord, so long as He remains both on the earth and in heaven, who, against such as are thankless for both one promise and the other, calls the elements themselves to witness: "Hear, O heaven, and give ear, O earth.
Source: Against Marcion Book III