All 4 Uses

revelation
in
To the Lighthouse
(Edited)

When she had sat there last ten years ago there had been a little sprig or leaf pattern on the table-cloth, which she had looked at in a moment of revelation.
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revelation = something previously unknown; or making such a thing known
The great revelation had never come.
Part 3
The great revelation perhaps never did come.
Part 3
This, that, and the other; herself and Charles Tansley and the breaking wave; Mrs. Ramsay bringing them together; Mrs. Ramsay saying, "Life stand still here"; Mrs. Ramsay making of the moment something permanent (as in another sphere Lily herself tried to make of the moment something permanent)—this was of the nature of a revelation.
Part 3

Definitions:

(1) (revelation)
something that was previously unknown (and typically surprising); or making such a thing known
(2) (meaning too rare to warrant focus)
As a proper noun, Revelation refers to the last book of the Bible with visionary descriptions of the End of Days. It can also refer to things revealed religiously rather than via logic.