David directs Psalm 19 “to the chief musician” (19:1). As it does in every other instance that it occurs, this inspired heading signifies that the content of this Psalm is of special importance to believers who are musicians.
We are not told specifically what that special importance is. By examining the ending of Psalm 19, however, we at least learn that David here has provided musicians with a prayer that is of patent significance for them.
David closes the Psalm by saying,
“Who can understand his errors? Cleanse Thou me from secret faults. Keep back Thy servant also from presumptuous sins: let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression. Let the words of my mouth, and the meditation of my heart, be acceptable in Thy sight, O LORD, my strength, and my redeemer” (19:12-14).
Certainly, this prayer is vital for all believers. Because of the public nature of their ministries, those believers who speak or write to others must especially entreat God to sanctify them wholly in this manner.
The special importance of this prayer for Christian musicians lies in the singular effects of their verbal ministry to others—words that are sung, especially repeatedly, are far more often remembered and uttered by others long after words preached in even striking messages have been forgotten. Because the potential for their words to have this unique influence on others is exceedingly great, musicians who minister to others must beg God fervently for His work in their lives to make their words and the meditation of their hearts acceptable to Him!