Learning Wisdom from Moses’ Oldest Psalm
Psalm 90 is the oldest psalm in the Bible—written not by David, but by Moses. He knew something about time. He watched an entire generation rise and fall in the wilderness. He saw God’s eternity contrasted sharply with human fragility. And at the heart of his prayer sits one deeply honest request:
“Teach us to realize the brevity of life,
so that we may grow in wisdom.” —Psalm 90:12 (NLT)
This is not a verse meant to depress us. It’s meant to sober us, sharpen us, and ultimately set us free to live wisely before God.
1. Wisdom Begins With A Right View of Time
Moses isn’t asking God to make life longer; he’s asking God to make life clearer.
We naturally drift into thinking we have unlimited days ahead. We say things like “someday,” “later,” or “when things settle down.” But Moses learned—through the wilderness, through loss, and through leadership—that life is short, and pretending otherwise is foolish.
The wise don’t fear the brevity of life; they acknowledge it. And that acknowledgment becomes a kind of spiritual wake-up call.
2. Brevity Produces Clarity
When you understand that life is short, your priorities change.
- You stop wasting time on petty conflicts.
- You value relationships more deeply.
- You give generously because you know you can’t take anything with you.
- You invest spiritually in the next generation.
- You refuse to coast spiritually because you know every day counts.
Moses wasn’t asking God to simply remind us of death—he was asking God to remind us of purpose.
Brevity clarifies what truly matters.
3. Wisdom Is Not Automatic With Age
Notice Moses’ wording: “Teach us…”
Time alone doesn’t make people wise. Some grow old but never grow up. Moses asks God to teach us—to shape our hearts, priorities, and decisions through His perspective.
Wisdom is the ability to live today in light of eternity.
It’s choosing obedience now because you know it echoes forever.
It’s living intentionally rather than accidentally.
4. The Brevity of Life Should Lead Us to Live Fully, Not Fearfully
Some people respond to life’s shortness with panic. Others respond with denial. Moses invites us to respond with purpose.
When you know your days are numbered—by God’s loving hand—you stop drifting.
You start:
- loving your family intentionally,
- using your gifts for God boldly,
- repenting quickly,
- speaking encouragement often,
- saying “yes” to the right things and “no” to the draining ones,
- living with an eternal perspective.
Ironically, those who understand the brevity of life are often the ones who live with the most joy and freedom—because they’re not wasting their days.
5. The Ultimate Wisdom: Anchor Your Life in God
The entire psalm is a contrast between God’s eternal nature and our temporary one. Moses begins by calling God our “dwelling place in all generations.” That’s the key:
If life is short, then God must be our home.
If our days are fleeting, then His presence must be our stability.
Wisdom isn’t just good decision-making; it’s rootedness in God.
A Prayer for Our Own Lives
Here’s the prayer Moses wanted us to pray:
“Lord, teach me to understand how short my life is,
and let that understanding make me wise.”
Teach me to treat each day as a gift.
Teach me to love people well.
Teach me to invest in things that matter.
Teach me to walk closely with You, because You are eternal and I am not.
Final Thought: Live Today Like It Matters—Because It Does
Moses saw nations rise and fall. He saw people come and go. And yet he learned this one truth: Life is brief, but it is meaningful. Fully lived, it becomes a testimony of God’s grace in a short span of time.
Let the brevity of life move you toward wisdom, courage, and wholehearted devotion. Don’t count your days—make your days count.
