The word [סלה] is found 70 times, as Parkhurst says, in the Psalms, and thrice in this chapter. “It was most probably,” he adds, “a note of music, or a direction to the singers in the temple service to raise their voices or instruments where it is inserted.” The opinion of Gesenius is the same, it being a direction, as he says, “to repeat the preceding verse in a louder strain.” It is always rendered by the Septuagint Διαψαλμα, which means a variation in singing.
Some have rendered the word pause, but it cannot be so considered, for it occurs at the end of at least three of the Psalms. There seems to be no regularity in its adoption in some of the Psalms it occurs once, in some twice, in others thrice, and in one psalm four times.
Calvin has not referred, in his comment, to the latter part of this verse, which, according to his Latin, may be thus translated,—
Cover the heavens did his glory;
With his praise full was the earth.
Both glory and praise here are to be taken as signifying their manifestations. The reference is made to the displays of divine majesty on mount Sinai. The original may be thus rendered—
Cover the heavens did his shining,
And his lustre filled the earth. —Ed.