The great Augustine once said that in the affairs of men, the dead are replaced by the dying. Isaac Watts memorably rendered Psalm 90 this way: “Time, like an ever-rolling stream/Bears all its sons away;/They fly forgotten, as a dream/Dies at the opening day.” “So teach us to number our days, that we may apply our hearts unto wisdom” (Ps. 90:12).

But there is more to this wisdom than simply recognizing how fleeting our lives are. We need something to compare it to, and that something is one in the order of Melchizedek, with the power of an indestructible life (Heb. 7:16). Without the baseline of eternal life, our earthly lives are not even fleeting.