Psalms 90 · WEB
Teach Us to Number Our Days
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Summary
Psalm 90 is the oldest psalm in the Psalter — attributed to Moses — and one of its most profound meditations. It opens with the eternal God who has been Israel's home for all generations, contrasted with humanity's brevity and transience under divine judgment. The heart of the psalm is verse 12: "Teach us to number our days, that we may gain a heart of wisdom." The closing petition asks God to make his favor visible in our work — the desire to build something lasting within the limits of our brief lives.
Themes
- The eternal God contrasted with the brevity of human life
- Divine anger as the context in which human transience is experienced
- The prayer for wisdom born from honest reckoning with mortality
- God's loving kindness satisfying at morning as the antidote to brevity
- Establishing the work of our hands — lasting fruit within limited lives
Key verses
Context & background
Psalm 90 opens Book IV (Psalms 90-106) and is the only psalm attributed to Moses. It may have been composed during the wilderness wandering — the generation that died in the desert under God's judgment (Numbers 14). The famous "seventy years" or "eighty by reason of strength" (v. 10) is not primarily a health statistic but a theological statement about the limits of human life under judgment. "A thousand years in your sight are like yesterday" (v. 4) — the apostle Peter quotes this in 2 Peter 3:8 in his discussion of why Christ's return seems delayed. The prayer to "number our days" (v. 12) is the wisdom tradition's foundational discipline: mortality awareness as the beginning of wisdom.
Cross-references
- 2 Peter 3:8 — Peter quotes v. 4 about God's time in the context of the delayed parousia
- Colossians 3:23 — "whatever you do, work at it with all your heart" — v. 17's established work
- Ecclesiastes 7:2 — "it is better to go to the house of mourning" — v. 12's numbering of days
- James 4:14 — "you are a mist that appears for a little time" — vv. 5-6's transience
- Numbers 14 — the wilderness generation under judgment — Moses's context for this psalm