Psalm 99:1
99:1 The LORD reigneth; let the {a} people tremble: he sitteth
     [between] the cherubims; let the earth be moved.

     (a) When God delivers his Church all the enemies will have
         reason to tremble.

Psalm 99:3
99:3 Let them {b} praise thy great and terrible name; [for] it
     [is] holy.

     (b) Though the wicked rage against God, the godly will
         praise his Name and mighty power.

Psalm 99:5
99:5 Exalt ye the LORD our God, and worship at his {c}
     footstool; [for] he [is] holy.

     (c) That is, before his temple or ark, where he promised to
         hear when they worshipped him, as now he promises his
         spiritual presence, wherever his Church is assembled.

Psalm 99:6
99:6 Moses and Aaron among his priests, {d} and Samuel among
     them that call upon his name; they called upon the LORD,
     and he answered them.

     (d) Under these three he comprehends the whole people of
         Israel, with whom God made his promise.

Psalm 99:8
99:8 Thou answeredst them, O LORD our God: thou wast a God that
     forgavest them, though thou tookest vengeance of {e} their
     inventions.

     (e) The more liberally God deals with his people, the more
         he punishes them who abuse his benefits.