John the Apostle
Revelation 16:16ESV·traditional attribution

And they assembled them at the place that in Hebrew is called Armageddon.

Matthew Henry Presbyterian @wholebiblehenry

The sixth angel poured out his vial; and observe, I. Where it fell - upon the great river Euphrates. Some take it literally, for the place where the Turkish power and empire began; and they think this is a prophecy of the destruction of the Turkish monarchy and of idolatry, which they suppose will be effected about the same time with that of the papacy...

Commenting on Revelation 16:12-16

John Gill Reformed Baptist @doctorgill

And the seventh angel poured out his vial into the air,.... Or "upon the air", as the Alexandrian copy, Syriac and Arabic versions, read; by which is meant the kingdom of Satan, he being the prince of the power of the air, Eph 2:2 not that he has power over the air, to raise or lay winds and storms in it at pleasure; but he...

Albert Barnes Presbyterian @notesbybarnes

Verse 16. And he gathered them together. Who gathered them? Prof. Stuart renders it, "they gathered them together," supposing that it refers to the "spirits"--πνευματα--in , and that this is the construction of the neuter plural with a singular verb. So De Wette understands it.