What This Chapter Is About
The psalm attributed to Moses — the only psalm bearing his name — and the opening of Book IV of the Psalter. It meditates on the eternal nature of God set against the crushing brevity of human life. Before the mountains existed, God was already God. Human beings are like grass that sprouts in the morning and withers by evening. The psalm traces this brevity to God's anger against sin: human days are consumed in divine wrath, and even seventy or eighty years pass like a sigh. The psalm closes with two petitions: teach us to number our days that we may gain a heart of wisdom, and let the favor of the Lord rest upon us so that the work of our hands will endure.
What Makes This Chapter Remarkable
This psalm answers the crisis of Psalm 89. Book III ended with the Davidic covenant apparently shattered, the anointed one mocked, and the question 'Where is Your former faithful love?' hanging unanswered. Book IV opens with Moses — not David — and redirects the theological gaze from the Davidic dynasty to the eternal God who existed before any dynasty, any monarchy, any temple. The psalm's strategy is radical: instead of defending the Davidic covenant, it leaps behind it to the God who was a dwelling place 'in generation after generation,' long before David was born. If the Davidic institution has failed, God has not — because God precedes all institutions. The famous prayer 'teach us to number our days' is not gentle pastoral advice; it is the hard-won wisdom of a man who watched an entire generation die in the wilderness because of God's anger. Moses knew something about numbered days.
Translation Friction
The attribution to Moses makes this potentially the oldest psalm in the Psalter — and the oldest poem in the Hebrew Bible after the Song of the Sea (Exodus 15). Some scholars accept the attribution as plausible; others see it as a later ascription meant to ground Book IV's theology in Mosaic authority. The phrase 'a thousand years in Your sight are like yesterday' (v. 4) has influenced theological reflection on divine timelessness from Augustine to Einstein. The psalm's unflinching focus on death and divine wrath — without the redemptive turn most psalms provide — makes it one of the most sobering texts in Scripture.
Connections
The opening line ('Lord, You have been our dwelling place') connects to Deuteronomy 33:27 ('The eternal God is your dwelling place'). The grass metaphor (vv. 5-6) is developed in Isaiah 40:6-8 ('All flesh is grass'). The seventy-eighty years of verse 10 became the standard biblical lifespan measure. The petition 'teach us to number our days' (v. 12) influenced Ecclesiastes' entire meditation on time and wisdom. Moses' placement at the head of Book IV (Psalms 90-106) reframes the Psalter: after the Davidic crisis of Psalm 89, the response is to return to the God who preceded David, preceded the monarchy, preceded even the conquest — the eternal God who was dwelling place before any earthly dwelling existed.
**Tradition comparisons:** The Latin Vulgate shaped Western theology here: Mille anni became the basis for millennial calculations and the 'day-age' theory in Western biblical interpretation. Quoted in 2 Peter 3:8, this verse shaped Western eschatology and creation chronolog... See the [Vulgate Psalms](/vulgate/psalms).