Psalm 51:15

Psalm 51:15, in plain English

David recognizes that his own lips can't speak God's praise until God opens them—he needs God's permission and empowerment to testify.

Why it's here

This is profound humility. David isn't saying 'I'll praise God'—he's saying 'Lord, unlock my mouth so I can praise You.' He understands that his ability to witness and speak truth comes from God, not from his own resources.

Who's speaking

David

Where it sits in the story

Throughout Scripture, people are empowered by God to speak His truth. From Moses asking 'who am I to speak?' to Peter being filled with the Spirit on Pentecost, genuine witness requires God to open your mouth and fill it with His words.

The scholarly reading

The psalmist appeals that God open his lips so that his mouth will declare God's praise—recognizing that authentic proclamation requires divine enablement.

Language and setting

The invocation 'Adonai, sefatai tiftach'—'O Lord, open my lips'—uses the imagery of sealed lips, silence imposed either by shame or divine judgment. The request for God to open them reverses this condition. The consequent clause 'ufi yagid tehilatecha'—'and my mouth will declare Your praise'—links the opening of lips to spontaneous testimony. This is not a self-initiated project but the result of divine causation; God opens the lips, and praise flows forth. The term tehillah (praise, specifically from which 'Psalms'/'Tehillim' derives) represents the fundamental posture of the redeemed creature. The verse articulates what later theologians would call prevenient grace: that even the capacity to praise requires God's prior action.

Voice

David, directly addressing the Lord in petition that he be enabled to fulfill his newly envisioned role as witness.

Significance

This verse illuminates the structure of the entire psalm: David's confession and petition move toward the recovery of his capacity to praise. In the context of the Psalter, this suggests that the psalm itself—this very utterance—represents the opening of lips that verse 15 petitions. It demonstrates the reflexive pattern of biblical spirituality: the prayer itself becomes the answer to the prayer. In Christian theology, this was understood through the lens of the Spirit's gift of speech at Pentecost and the Spirit's role in enabling authentic prayer (Romans 8:26). The verse grounds proclamation not in human eloquence but in divine enablement.

13Then I will teach transgressors Your ways, and sinners will return to You.

14Deliver me from bloodguilt, O God, the God of my salvation, and my tongue will sing of Your righteousness.

15O Lord, open my lips, and my mouth will declare Your praise.

16For You do not delight in sacrifice, or I would bring it; You take no pleasure in burnt offerings.

17The sacrifices of God are a broken spirit; a broken and a contrite heart, O God, You will not despise.

Read all of Psalm 51 — David's prayer after his greatest failure. The most raw, honest confession in Scripture.