What is the meaning of Revelation 3:7?

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

To the angel of the church in Philadelphia write: These are the words of the One who is holy and true, who holds the key of David. What He opens no one can shut, and what He shuts no one can open.

Berean Standard Bible (BSB)

“To the angel of the assembly in Philadelphia write: “He who is holy, he who is true, he who has the key of David, he who opens and no one can shut, and who shuts and no one opens, says these things:

World English Bible (WEB)

And{G2532} to the angel{G32} of the church{G1577} in{G1722} Philadelphia{G5359} write{G1125}{(G5657)}; These things{G3592} saith{G3004}{(G5719)} he that is holy{G40}, he that is true{G228}, he that hath{G2192}{(G5723)} the key{G2807} of David{G1138}, he that openeth{G455}{(G5723)}, and{G2532} no man{G3762} shutteth{G2808}{(G5719)}; and{G2532} shutteth{G2808}{(G5719)}, and{G2532} no man{G3762} openeth{G455}{(G5719)};

Strong's King James

(7) To the angel in Philadelphia's assembly-church write: The firm-true Holy One who has the key of David that opens and nobody will shut and shuts and nobody opens, says this is what:

The F.O.G*

[7] Write this to the angel guarding the community in Philadelphia - these words come from the Holy One, the True One, who holds the key of David. What He opens, no one can shut, and what He shuts, no one can open:

The F.O.G Paraphrase

‘And to the messenger of the assembly in Philadelphia write: These things saith he who is holy, he who is true, he who is having the key of David, he who is opening and no one doth shut, and he shutteth and no one doth open!

Young's Literal Translation