Psalms 90
Teach Us to Number Our Days
Overview
The only psalm attributed to Moses, meditating on God's eternity versus human brevity. This foundational prayer asks God to help us live wisely in light of our mortality and His timelessness.
Introduction
Psalm 90 opens Book IV of the Psalter and is the only psalm attributed to Moses. It meditates profoundly on the contrast between God's eternity and human transience. Out of this reflection comes one of Scripture's most important prayers: "Teach us to number our days."
God's Eternal Dwelling
[1-2] "Lord, you have been our dwelling place throughout all generations. Before the mountains were born or you brought forth the whole world, from everlasting to everlasting you are God." God has sheltered His people through every era. His existence predates and outlasts creation itself.
- Our dwelling place [1]: God as shelter through time
- Throughout all generations [1]: Past, present, future covered
- Before mountains born [2]: Before creation's foundations
- Brought forth world [2]: Created everything
- Everlasting to everlasting [2]: Without beginning or end
- You are God [2]: Eternal deity
Human Mortality
[3-6] "You turn people back to dust, saying, 'Return to dust, you mortals.'" A thousand years to God are like yesterday passing or a watch in the night. God sweeps people away in sleep; they are like grass—flourishing in morning, withered by evening. The contrast between divine eternity and human brevity is stark.
- Turn to dust [3]: Return to earth from which we came
- Thousand years like yesterday [4]: Divine perspective on time
- Watch in night [4]: Brief hours passing
- Sweep away in sleep [5]: Death comes suddenly
- Like new grass [5]: Brief flourishing
- Morning springs up [6]: Life's vigorous start
- Evening withered [6]: Rapid decline
Under Divine Wrath
[7-10] "We are consumed by your anger and terrified by your indignation. You have set our iniquities before you, our secret sins in the light of your presence." Human life passes under God's wrath; days decline in groaning. Seventy or eighty years—yet their span is trouble and sorrow. Life flies by, and we are gone.
- Consumed by anger [7]: Human life under judgment
- Terrified by indignation [7]: Divine displeasure felt
- Iniquities before you [8]: Sin exposed to God's gaze
- Secret sins in light [8]: Nothing hidden from His presence
- Days pass under wrath [9]: Life lived under judgment
- Years end in moan [9]: Sighing as life concludes
- Seventy or eighty years [10]: The human lifespan
- Trouble and sorrow [10]: Even the best years bring grief
- Quickly pass, fly away [10]: Speed of life's passage
The Crucial Prayer
[11-12] "If only we knew the power of your anger! Your wrath is as great as the fear that is your due. Teach us to number our days, that we may gain a heart of wisdom." The key petition: help us understand our mortality so we live wisely. Knowing life is short should produce wisdom.
- Power of your anger [11]: We underestimate divine wrath
- Wrath matches fear due [11]: God's anger is proportionate to His glory
- Teach us to number days [12]: Help us count correctly
- Heart of wisdom [12]: The result of proper perspective
Prayer for Restoration
[13-17] "Relent, LORD! How long will it be? Have compassion on your servants." Moses asks God to satisfy them with unfailing love, to make up for afflicted years with gladness. "May the favor of the Lord our God rest on us; establish the work of our hands."
- Relent [13]: Turn from wrath
- How long? [13]: Duration of difficulty
- Compassion on servants [13]: Mercy for those who serve
- Satisfy with love [14]: Fill us with hesed each morning
- Sing for joy [14]: Celebration all our days
- Gladness matching affliction [15]: Joy proportionate to sorrow
- Show your deeds [16]: Let servants see Your works
- Splendor to children [16]: Glory to next generation
- Favor rest on us [17]: Divine blessing abide
- Establish our work [17]: Make labor count eternally
Key Takeaways
- God is eternal, we are not [2, 4]: A thousand years are a day to Him
- Human life is brief [5-6, 10]: Like grass that withers
- Sin explains mortality [7-9]: Death is connected to divine wrath
- Wisdom comes from facing mortality [12]: Numbering days produces wise hearts
- God can satisfy and establish [14, 17]: His love can fill; His favor can make work lasting
Reflection Questions
- Do you "number your days"? How does awareness of mortality shape your priorities?
- How does the contrast between God's eternity and your brevity affect how you approach today?
- What work do you hope God will "establish"—make lasting beyond your lifetime?
Pause and Reflect
"Teach us to number our days, that we may gain a heart of wisdom." — Psalm 90:12
Take 5 minutes to actually number your days. If you live to 80, how many days is that? How many have passed? How many might remain? Let this exercise be sobering but not morbid. Ask God for wisdom—that the shortness of life would shape how you invest each day He gives.
This Bible study was written by Claude AI to help you engage with God's Word while our team prepares in-depth studies.