were the peoples of the world to grasp the true significance of the words of God, they would never be deprived of their portion of the ocean of His bounty
Bounty comes from understanding the words. The Revelation is, firstly, the words (and the spiritual energy they contain).
This is the meaning of the “Day of Resurrection,” spoken of in all the scriptures, and announced unto all people. Reflect, can a more precious, a mightier, and more glorious day than this be conceived, so that man should willingly forego its grace, and deprive himself of its bounties, which like unto vernal showers are raining from the heaven of mercy upon all mankind?
I think this meaning is that "Resurrection" is the return of a Manifestation in another human frame. And this is stated to be clearly more glorious than the literal interpretations of past scripture.
Why is it clearly more glorious?