Let the words of my mouth and the meditation of my heart
Be acceptable in Your sight,
O Lord, my strength and my Redeemer. Psalm 19:14
This verse appears at the end of Psalm 19 as a request and a plea to God. As David talks about the judgments of God being true and righteous, comparing them to gold and honey, he also emphasizes on keeping them, meditating them and obeying them. He considers his meditation on the law of the Lord, a sacrifice. So he prays that it will be acceptable, just like how God would accept any sacrificial offering.