“Revealed religion is manifested religion, because in it God has become wholly manifest.”
Lectures on the philosophy of religion, together with a work on the proofs of the existence of God http://www.archive.org/stream/lecturesonthephi00hegeuoft#page/n5/mode/2up. Translated from the 2d German ed. by E.B. Speirs, and J. Burdon Sanderson: the translation edited by E.B. Speirs. Published 1895 p. 84-85
Lectures on Philosophy of Religion, Volume 1 (1827)
Context: Spirit is knowledge; but in order that knowledge should exist; it is necessary that the content of that which it knows should have attained to this ideal form, and should in this way have been negated. What Spirit is must in that way have become its own, it must have described this circle; then these forms, differences, determinations finite qualities, must have existed in order that it should make them its own. This represents both the way and the goal-that Spirit should have attained to its own notion or conception, to that which it implicitly is, and in this way only, the way which has been indicated in its abstract moments, does it attain it. Revealed religion is manifested religion, because in it God has become wholly manifest. Here all is proportionate to the notion; there is no longer anything secret in God.
