NET

16 Then the twenty-four elders who are seated on their thrones before God threw themselves down with their faces to the ground and worshiped God

Darby

16 And the twenty-four elders, who sit^D9555 on their thrones before God, fell upon their faces, and worshipped^D9556 God,

Darby Bible Notes

sit - Or 'who sat.' It is characteristic, without reference to time, save as he had seen them (ch. 4.4); 'the sitters on thrones.' I put only 'sit,' because the scene is present, though the actions follow one another. worshipped - See Note, ch. 3.9.

KJV

16 And the four and twenty elders, which sat before God on their seats, fell upon their faces, and worshipped God,