Teach Us to Number Our Days

Steven Lee
Pastor for Preaching & Vision
Dear North Church,
Last weekend, I shared a few reflections from Psalm 90 at the Finishing the Race seminar, which I will share in abbreviated form below.
Time has a way of sneaking up on us. I recently read about an author who calculated that if he visited his aging parents once a year, he might see them only fifteen more times before they passed. That realization changed everything—he moved across the country to live near them. Moments like that expose how fleeting our lives are. Isaiah reminds us, “The grass withers, the flower fades, when the breath of the Lord blows on it; surely the people are grass” (Isa 40:7).
Psalm 90, written by Moses at the end of his life, teaches us how to live wisely in light of the brevity of time. It is a prayer of an old man who has seen God’s power, human rebellion, and the shortness of life. Standing on the edge of the Promised Land he would never enter, Moses looks back and prays, “Teach us to number our days that we may get a heart of wisdom” (Ps 90:12).
Moses gives us three truths from Psalm 90.
- Remember the Eternal God.
Before the mountains were formed, God was. “From everlasting to everlasting you are God” (Ps 90:2). While everything changes—our age, our health, our circumstances—God never does. Remembering His eternality reorders our perspective. We do not own our time; it is given. As James reminds us, “You are a mist that appears for a little time and then vanishes” (Jas 4:14). Every breath is borrowed. Each day is a gift. Living wisely means seeing every day and every breath as a gift from the eternal God.
- Respond with Humble Repentance.
Moses acknowledges humanity’s sin and God’s righteous anger. Our lives “pass away under [his] wrath,” and our years “come to an end like a sigh” (Ps 90:9). The right response to the fleeting nature of life is not panic, but repentance. True wisdom begins with fearing the Lord (Prov 9:10). While modern culture tries to outrun death through science, health, and longevity experiments, we cannot escape death. The answer is not to strive for earthly immortality, but to seek our satisfaction in God: “Satisfy us in the morning with your steadfast love, that we may rejoice and be glad all our days” (Ps 90:14).
- Rely on God for Lasting Impact.
At the close of Psalm 90, Moses prays, “Let the favor of the Lord our God be upon us, and establish the work of our hands” (Ps 90:17). Moses knew he would not enter into the Promised Land, nor would he lead Israel all the way in. Yet he trusted that God would complete what he began. We too long for our labors and influence to last, but it is God who establishes the work of our hands (Ps 90:17). We labor, but God gives the growth.
Psalm 90 reminds us that our days are numbered. Therefore, make the most of today. How might we speak with love and kindness? How might our words be seasoned with salt? Who might we encourage, build up, or share the hope of Christ with? Ask God to teach you to number your days, so that you might gain a heart of wisdom, and make much of Christ every day for his glory and for your everlasting joy.
Longing for more wisdom,
Pastor Steven























































