John the Apostle
Revelation 11:16BSB·traditional attribution

And the twenty-four elders who sit on their thrones before God fell on their faces and worshiped God,

Matthew Henry Presbyterian @wholebiblehenry

We have here the sounding of the seventh and last trumpet, which is ushered in by the usual warning and demand of attention: The second woe is past, and, behold, the third woe cometh quickly. Then the seventh angel sounded. This had been suspended for some time, till the apostle had been made acquainted with some intervening occurrences of very great moment, and worthy of his notice and observation.

Commenting on Revelation 11:14-19

John Gill Reformed Baptist @doctorgill

And the four and twenty elders,.... The same with those in Rev 4:4; which sat before God on their seats; as they are also there described; and which may be expressive of their enjoyment of the divine Presence; and also of their quiet and undisturbed situation, being restored to their former places, which they now possess without molestation and interruption; for as these are the...

Albert Barnes Presbyterian @notesbybarnes

Verse 16. And the four and twenty elders, which sat, etc. . Fell upon their faces, and worshipped God. Prostrated themselves before him--the usual form of profound adoration. , seq. (a) "four and twenty elders"