What is the meaning of Revelation 10:7?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

But in the days of the voice of the seventh angel, when he is about to sound his trumpet, the mystery of God will be fulfilled, just as He proclaimed to His servants the prophets.”

Berean Standard Bible (BSB)

but in the days of the voice of the seventh angel, when he is about to sound, then the mystery of God is finished, as he declared to his servants, the prophets.

World English Bible (WEB)

But{G235} in{G1722} the days{G2250} of the voice{G5456} of the seventh{G1442} angel{G32}, when{G3752} he shall begin{G3195}{(G5725)} to sound{G4537}{(G5721)},{G2532} the mystery{G3466} of God{G2316} should be finished{G5055}{(G5686)}, as{G5613} he hath declared{G2097}{(G5656)} to his{G1438} servants{G1401} the prophets{G4396}.

Strong's King James

(7) Yet in the days of the voice of the seventh angel, whenever he's going to sound, the mystery of אֱלֹהִים Elohim is completed as He proclaimed good news to His love-slaves, the prophets.

The F.O.G*

[7] When the seventh angel sounds his shofar, God's mysterious plan—His secret strategy revealed to His servants the prophets—will be completed. The full scope of divine purpose, long hidden, will finally become clear.

The F.O.G Paraphrase

but in the days of the voice of the seventh messenger, when he may be about to sound, and the secret of God may be finished, as He did declare to His own servants, to the prophets.

Young's Literal Translation