Passage
Let the words of my mouth and the meditation of my heart Be acceptable in Your sight, O Yahweh, my rock and my Redeemer.
Let the words of my mouth and the meditation of my heart Be acceptable in Your sight, O Yahweh, my rock and my Redeemer.
Psalms 19:12 Who can discern his errors? Acquit me of hidden faults.
Psalms 19:13 Also keep back Your slave from presumptuous sins; Let them not rule over me; Then I will be blameless, And I shall be acquitted of great transgression.
Psalms 19:14 Let the words of my mouth and the meditation of my heart Be acceptable in Your sight, O Yahweh, my rock and my Redeemer.
The verse centers on "words", "mouth", "meditation", "heart", "acceptable", "sight", "yahweh", and "rock". It is saying that the verse draws attention to "words" and "mouth", so its meaning should be read from those terms before moving to application.
The prior verse says "Also keep back Your slave from presumptuous...", giving immediate footing for "words" and "mouth". In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "words" and "mouth" with trust shaped by these words, not by a vague optimism outside the passage.