Teach Us to Number Our Days: Meaning & Reflection

This article explains the phrase “Teach us to number our days,” its biblical origin, its meaning, and how it applies to daily life. It answers the question directly: the phrase is a prayer for wisdom to recognize life’s brevity and live each day with purpose, not a literal request for arithmetic skills.

Formula

The formula for average pace is:

pace = finish time / distance

Where:

• Finish time (t) is in minutes
• Distance (d) is in kilometers
• Pace is in minutes per kilometer

For average speed:

speed = distance / (finish time / 60)

Where speed is in kilometers per hour.

Worked Example

Using the defaults: finish time = 50 minutes, distance = 10 km.

Pace = 50 / 10 = 5.00 min/km

Speed = 10 / (50/60) = 10 / 0.8333 = 12.00 km/h

The calculator shows an average pace of 5:00 per kilometer and an average speed of 12.00 km/h.

Background of the Phrase

The phrase comes from Psalm 90:12 in the Bible (King James Version): “So teach us to number our days, that we may apply our hearts unto wisdom.” This psalm is attributed to Moses and is one of the oldest in the Psalter. It reflects on human mortality compared to God’s eternity. The “numbering” is not about counting days on a calendar but about recognizing that life is finite and using that awareness to live wisely.

What It Really Means

To “number your days” means to be mindful that your time is limited. It is an invitation to reflect on what matters most, to prioritize relationships and meaningful work over trivial distractions. The prayer asks for a heart of wisdom, not just knowledge. In practical terms, it encourages people to set goals, forgive quickly, and invest in things that outlast them.

How to Apply It Today

You don’t need to be religious to benefit from the principle. Here are concrete ways to “number your days”:

• Plan your week with intentionality, not just busyness.
• Spend time with people you love, not just tasks.
• Write down what you want to accomplish in the next year, five years, and ten years.
• Practice gratitude daily to avoid taking time for granted.
• Make time for rest and reflection, not just productivity.

Common Misconceptions

Some think the phrase is morbid or depressing. Actually, it is meant to be freeing: acknowledging death helps you live fully. Another misconception is that it’s about predicting your lifespan. It’s not about knowing the number of days you have; it’s about living each day as if it matters. Also, it’s not a one-time prayer but a daily attitude.

Comparisons with Similar Sayings

Other cultures and traditions have similar ideas. The Latin phrase memento mori (“remember you must die”) was used in ancient Rome. Stoic philosophers like Seneca wrote about the shortness of life. In Buddhism, mindfulness of impermanence is a core practice. All these emphasize the same truth: awareness of mortality can lead to a more meaningful life.

Limits of the Metaphor

The phrase is poetic, not mathematical. You cannot literally count your days with precision. It also doesn’t mean you should obsess over time or become anxious. The goal is balance: plan for the future but live in the present. The metaphor works because it’s vivid, but it shouldn’t be taken as a literal command to calculate.

Frequently Asked Questions

What does “number our days” mean in Hebrew?
The Hebrew word for “number” is manah, which means to count, assign, or appoint. It implies recognizing that each day is appointed and limited.

Is this phrase only in the Bible?
It appears in the Bible, but the concept exists in many philosophies and religions. The exact phrase is biblical, but the idea is universal.

How can I “number my days” practically?
Start by setting aside time each morning to reflect on your priorities. Ask yourself: “If today were my last, what would I do differently?” Then act on that answer.

Does this phrase encourage procrastination?
No, the opposite. It encourages urgency without panic. You don’t know how many days you have, so you should use each one well.

Can I use this phrase in a non-religious context?
Yes. Many people use it as a motivational reminder to live purposefully, regardless of faith.

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in t | Finish time | min | 50 | 0
in d | Distance | km | 10 | 0
out pace | Average pace | min/km | t / d | 2
out speed | Average speed | km/h | d / (t / 60) | 2