Manifestation, n.
Etymology: [L. manifestatio: cf. F. manifestation.]
The act of manifesting or disclosing, or the state of being manifested; discovery to the eye or to the understanding; also, that which manifests; exhibition; display; revelation; as, the manifestation of God's power in creation. The secret manner in which acts of mercy ought to be performed, requires this public manifestation of them at the great day. Atterbury.
Shades of meaning
Fernald has no entry of its own for manifestation; he lists it under revelation, sign.
Where he writes about it:
The Apocalypse unveils the future, as if to the very gaze of the seer; the whole gospel is a disclosure of the mercy of God; the character of Christ is a manifestation of the divine holiness and love; all Scripture is a revelation of the divine will. — from revelation
Or we might say that nature is a manifestation of the divine character and will, of which Scripture is the fuller and more express revelation. — from revelation