Number our days. — This verse as it stands literally gives to allot, or in allotting (see Isaiah 65:12), our days, so teach, and we will cause to come the heart wisdom. The last clause, if intelligible at all, must mean “that we may offer a wise heart,” and the natural way to understand the verse is to make God, not man, as in the Authorised Version, the reckoner of the days. “In allotting our days thus make us know (i.e., make us know the power of Thine anger), in order that we may present a wise heart.”
The verse must evidently be taken in close connection. with the preceding, or the point of the petition is lost, and though the ordinary rendering, “Teach us to number our days,” has given birth to a number of sayings which might be quoted in illustration, it is neither in itself very intelligible, nor, except by one instance in later Hebrew, can it be supported as a rendering of the original.