O come. — The invitation is general, and may be contrasted with the heathen warning to the uninitiated, procul este profani. This exhortation to worship God, not with penitence, but with loud thanksgiving, is, as Perowne notes, the more remarkable considering the strain in which the latter part of the psalm is written.
Make a joyful noise. — There is no one English expression for the full burst of instrumental and vocal music which is meant by the Hebrew word here applied to the Temple service. Vulg., jubilemus.
Rock of our salvation. — As in Psalms 89:26. (Comp. “rock of refuge,” Psalms 94:22.)