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The phrase "number our days" expresses the thought of putting in order, arranging the use of, or prioritizing time because the end of one's life is fast approaching. Moses wanted us to remember that our remaining number of days grows smaller each day.
He reminds us because we rarely make a conscious relationship between sin and our mortality. We are so busy living for the moment that we fail to see a connection between our conduct and our finite lifespan. Moses appeals for help that we might be wise and live by faith. Proverbs 4:5-6 urges us, "Get wisdom! Get understanding! Do not forget, nor turn away from the words of my mouth. Do not forsake her, and she will preserve you." Because it bears so profoundly upon our accountability to God, using time properly may be the greatest of wisdom.
Romans 13:11-12 carries this thought down to our day, expressing the urgency of our situation:
And do this, knowing the time, that now it is high time to awake out of sleep; for now our salvation is nearer than when we first believed. The night is far spent, the day is at hand. Therefore let us cast off the works of darkness, and let us put on the armor of light.
John W. Ritenbaugh
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