Charles Ellicott Commentary Psalms 99:1

"Jehovah reigneth; let the peoples tremble: He sitteth [above] the cherubim; let the earth be moved." — Psalms 99:1 (ASV)

The Lord reigns. —See Note, Psalms 93:1.

Tremble. —LXX. and Vulgate, “be angry.” The optative mood in this and the following clause follows the Septuagint; however, the Hebrew is in the ordinary present tense: the peoples tremble, the earth staggers.

He sits. —In the original, a participle.

Between the cherubims ... —See Notes on Psalms 80:1.