Psalms 90:6

In the morning it flourisheth -This does not mean that it grows with any special vigor or rapidity in the morning, as if that were illustrative of the rapid growth of the young; but merely that, in fact, in the morning it is green and vigorous, and is cut down in the short course of a day, or before evening. The reference here is to grass as an emblem of man. And groweth up -The same word in the Hebrew which is used in the close of the previous verse. In the evening it is cut down, and withereth -In the short period of a day. What was so green and flourishing in the morning, is, at the close of the day, dried up. Life has been arrested, and death, with its consequences, has ensued.