A great thing about Psalms is that they are written general enough to be used by different people in different ways.  Psalm 19 makes a great prayer for anyone and is one of my favorite Psalms.  In it, David writes about how creation proclaims the glory of God in ways that everyone everywhere can see and understand.  This is what we’d call “general revelation.”  Next David writes about the law of God, how it is “perfect,” “pure,” “true,” and several other things.  This law also glorifies God, in what we’d call “special revelation,” or things revealed about God mostly through His word.

Then, after a brief interlude, the Psalm ends with verse 14, which says:

“Let the words of my mouth and the meditation of my heart
            be acceptable in your sight,
            O LORD, my rock and my redeemer.”

What a closing to a prayer!

The Lord, as “my rock and my redeemer,” rules nature (the literal rocks, etc.) and His Word redeems His people.  How can our “words” and “meditation” be acceptable to such a God?  The answer is first, because He loves us enough to redeem us, and second, because He is transforming us into people who are like Him.  In fact, the “interlude” I referred to before (verses 12 and 13) are David’s prayer that God would keep him from sin and make him acceptable in God’s sight.  Those verses say:

“Who can discern his errors?
            Declare me innocent from hidden faults.
Keep back your servant also from presumptuous sins;
            let them not have dominion over me!
Then I shall be blameless,
            and innocent of great transgression.

David first points out that we can’t find any errors in God, either in what’s revealed by nature or in His law, but on the other hand God knows all of our faults.  David knows better than to ask God to show him all of his flaws – that may be overwhelming – but instead David asks for a clear conscience.  To get there, David needs a solution for both his “presumptuous sins” – the outward actions that he’s probably aware of – and his “hidden faults” – the inner attitudes and sins that he may not be aware of.  To be declared innocent and blameless by God requires being forgiven for sins that we don’t even know about!

Which brings us back to the final verse:

“Let the words of my mouth and the meditation of my heart
            be acceptable in your sight,
            O LORD, my rock and my redeemer.”

In my reading of this, “the words of my mouth” correspond to the “presumptuous sins,” the sinful outer actions taken in defiance of God, and “the meditation of my heart” corresponds to David’s (and our) “hidden faults.” These sins may be secret to everyone but God but we may feel guilty about them anyway.  When praying this prayer, David knows only God can cleanse him (or anyone) beyond just skin deep, and beyond skin deep is what we really need to deal with because Jesus told us “every healthy tree bears good fruit, but the diseased tree bears bad fruit.”[1]  Only by healing the inside can we heal the outside.  David asks for relief from guilt so he can live acceptably in both public and private ways, before both men and before God.

We all need routine cleaning of our inner self on a regular basis.  A redirection of our conscience toward right and wrong as defined by God.  If you feel in need of this, try praying Psalm 19 today.

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[1] Matthew 7:17