What is the meaning of Matthew 24:30?

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

At that time the sign of the Son of Man will appear in heaven, and all the tribes of the earth will mourn. They will see the Son of Man coming on the clouds of heaven, with power and great glory.

Berean Standard Bible (BSB)

and then the sign of the Son of Man will appear in the sky. Then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of the sky with power and great glory.

World English Bible (WEB)

And{G2532} then{G5119} shall appear{G5316}{(G5691)} the sign{G4592} of the Son{G5207} of man{G444} in{G1722} heaven{G3772}: and{G2532} then{G5119} shall{G2875} all{G3956} the tribes{G5443} of the earth{G1093} mourn{G2875}{(G5695)}, and{G2532} they shall see{G3700}{(G5695)} the Son{G5207} of man{G444} coming{G2064}{(G5740)} in{G1909} the clouds{G3507} of heaven{G3772} with{G3326} power{G1411} and{G2532} great{G4183} glory{G1391}.

Strong's King James

(30) At that time the sign of the Son of Humanity will shine in the sky and then all the tribes of the land will mourn and they will see the 'SON OF HUMANITY COMING ON THE CLOUDS OF THE SKY with power and great glory.'

The F.O.G*

[30] "Then the sign of the Son of Man will appear in heaven, and all peoples on earth will mourn as they see Me, the Son of Man, coming on heaven's clouds with power and great glory."

The F.O.G Paraphrase

and then shall appear the sign of the Son of Man in the heaven; and then shall all the tribes of the earth smite the breast, and they shall see the Son of Man coming upon the clouds of the heaven, with power and much glory;

Young's Literal Translation