Todays word: revelation

revelation
noun [C or U]
1 when something is made known that was secret, or a fact that is made known:
a moment of revelation
[+ that] His wife divorced him after the revelation that he was having an affair.
Shocking revelations about their private life appeared in the papers.

2 come as/be a revelation to be an extremely pleasant surprise:
This book came as a complete revelation to me.