The answer is: Psalm 90

Psalm 90 - This psalm, attributed to Moses, reflects on the brevity of human life and God’s eternal nature. It contrasts the fleeting existence of man with God’s everlasting presence. Interestingly, it serves as a lament but also calls for wisdom (90:12), paralleling themes found in Ecclesiastes regarding the meaning of life.

Psalm 90 stands out as a unique reflection not only of individual human experience but also of a deeper understanding of the divine spirit's workings through time. Attributed to time-honored Moses—a central figure who led his people through the wilderness—this psalm is like a philosophical letter recognizing the temporary nature of human life against the backdrop of God's everlasting essence.

The poignant imagery of life being "like grass that is renewed in the morning" (90:5) evokes a sense of humility. Grass thrives for a time but inevitably wilts. This serves as a friendly reminder about the seral cycles familiar to many cultures, emphasizing the transitory aspect of existence and prompting a deeper consideration of what we value in our lives. You can almost hear echoes of Ecclesiastes here—with both texts urging us to ponder the true richness of life, and calling for a thoughtful approach to our days.

Fascinatingly, the reverence for wisdom mentioned in Psalm 90:12 has inspired countless people to seek deeper meaning and insight, nearly resembling the philosophical musings of sages from all walks of history. When Moses implores his readers to “number our days,” he invites a mindfulness practice—something still relevant today! So next time you reflect on your own existence, consider the wisdom borne of generations shaped by this very psalm. It's an invitation to find meaning amidst the quick passing of our earthly experiences.