Scientists predict that the average lifespan in the United States may reach 100 by the end of the 21st century. They say the genetics that control aging could be altered to extend life beyond the 70 to 80 years referred to in Psalm 90:10. Life's final chapter, however, will still read, "It is soon cut off, and we fly away."

Moses, who wrote those words, likened our existence to grass that flourishes in the morning and is cut down and withers in the evening (vv.5-6). Although he lived to be 120 (Deuteronomy 34:7), life's brevity was never far from his mind. That's why he prayed, "Teach us to number our days, that we may gain a heart of wisdom (Psalm 90:12).

D. J. De Pree, a longtime member of the RBC Board of Directors, took those words literally. He calculated the number of days from the date of his birth until he would turn 70. At the end of each day he'd reduce his total by one. To see that figure decline reminded him to make each day count for the Lord.

We are all part of a rapidly passing scene. That should sober us, but not discourage us. Moses affirmed God as his "dwelling place" (v.1). That's the way to face the life-long issue of our fleeting earthly existence.
  — Dennis J. De Haan