Psalms 90

Psalm 90 is a prayer attributed to Moses that contrasts the eternal, unchanging nature of God with the frailty and brief duration of human life, leading to a plea for divine wisdom and favor.

• The Psalmist acknowledges God as the eternal refuge for all generations (vv. 1-2).
• He describes the fleeting nature of man's life in the context of divine judgment and sovereignty (vv. 3-6).
• He confesses that human life is filled with sorrow and cut short by God's righteous anger against secret sin (vv. 7-11).
• He concludes with a petition for God to teach His people wisdom, to return to them in mercy, and to establish the work of their hands (vv. 12-17).

• God as 'dwelling place' (māʿôn) vs. man as 'dust' (dakkāʾ)
• The contrast between 'everlasting to everlasting' and a 'watch in the night'
• The lifecycle metaphors: flood, sleep, grass, and cut-down vegetation
• The measure of life: 'threescore years and ten'
• The plea to 'number our days' and 'establish the work of our hands'

This is the only Psalm attributed to Moses, serving as a foundational reflection on the finiteness of man before the infinite Creator; it sets the tone for Book IV of the Psalter, which emphasizes God's sovereignty over creation.

Because God is eternal and man is transient, we must seek divine wisdom to live our brief days in light of His holiness and mercy.

The Psalm follows a movement from cosmic perspective (God's eternity) to terrestrial perspective (man's mortality), culminating in a prayer for grace to bridge that gap.

• God's mercy and favor are sought as a lasting satisfaction (v. 14)
• The request that God would 'establish the work of our hands' implies a divine partnership in human labor (v. 17)

• The plea for God to 'teach us to number our days' functions as an imperative for the seeker of wisdom (v. 12)

• The recognition that secret sins are not hidden from God but are in the 'light of his countenance' (v. 8)

• Traditionally attributed to Moses (superscription). It likely reflects the wilderness experience of Israel (Num 14), where a generation was sentenced to die for their unbelief.
• Matthew Henry observes regarding the contrast of time: 'Between a minute and a million of years there is some proportion; between time and eternity there is none.'

• The metaphor of 'grass' (ḥāṣîr [H2682]) for human life is common in ANE wisdom literature, emphasizing the fragility of life in an arid climate where vegetation quickly dries up.
• The 'watch in the night' (ʾašmurâ [H821]) reflects the ancient three-watch division of the night, emphasizing the fleeting nature of time.

• This psalm opens Book IV of the Psalter (Psalms 90–106). It serves as a meditation on the covenantal relationship between God and Israel, possibly responding to the exile or the wilderness wanderings.

• It mirrors Genesis 3:19 ('for dust thou art, and unto dust shalt thou return'), where God pronounces the return of man to the earth, here echoed in v. 3.
• The themes of human frailty vs. divine sovereignty anticipate the New Testament emphasis on the shortness of time in James 4:14.

• Genesis 3:19: 'Return' (šûb [H7725]) of man to dust (dakkāʾ [H1793]) corresponds to the creation narrative.

• Dwelling place: māʿôn [H4583] - indicates a place of refuge or habitation.
• Formed: ḥûl [H2342] - literally 'to writhe,' often in the context of labor pains, poetic for the birth of the world.
• Everlasting: ʿôlām [H5769] - indicates the vanishing point of time, eternity.
• Return: šûb [H7725] - a key pivot word used in v. 3 for judgment and v. 13 for prayer.

• The transition from God's eternal 'dwelling' to man's lack of a permanent 'dwelling' on earth.
• The specific age 'threescore years and ten' (v. 10) is not a prescriptive promise of long life but an observation of the normative lifespan of that generation.
• The prayer is not just for mercy, but that the 'work of our hands' be aligned with God's glory.

• There is no scholarly consensus on whether the 'threescore and ten' refers to a universal standard for all history or the specific historical circumstances of the Israelites in the wilderness.