"Grass" throughout is a comprehensive term for herbage, and the "flower of grass" does not mean the bloom or blossom of grass in the narrower sense, but the wild flowers, specially abundant and brilliant in the Holy Land, which grow among the grass. Thus, in the Sermon on the Mount, what are first called "the lilies (τὰ κρίνα) of the field" are immediately afterwards called "the grass (τὸν χόρτον) of the field" (Matt. vi. 28, 30).
"The scorching wind" (ὁ καύσων) is one of the features in the Epistle which harmonize well with the fact that the writer was an inhabitant of Palestine. It is the furnace-like blast from the arid wilderness to the east of the Jordan. "Yea, behold, being planted, shall it prosper? shall it not utterly wither when the east wind toucheth it? It shall wither in the beds where it grew" (Ezek. xvii. 10). "God prepared a sultry east wind; and the sun beat upon the head of Jonah, that he fainted" (Jonah iv. 8). The fig-tree, olives, and vine (iii. 12) are the chief fruit-trees of Palestine; and "the early and latter rain" (v. 7) points still more clearly to the same district.
It has been remarked with justice that whereas St. Paul for the most part draws his metaphors from the scenes of human activity--building, husbandry, athletic contests, and warfare--St. James prefers to take his metaphors from the _scenes of nature_. In this chapter we have "the surge of the sea" (ver. 6) and "the flower of the grass" (ver. 10). In the third chapter we have the "rough winds" driving the ships, the "wood kindled by a small fire," "the wheel of nature," "every kind of beasts and birds, of creeping things, and things in the sea," "the fountain sending forth sweet water," "the fig-tree and vine" (vv. 4, 5, 6, 7, 11, 12). In the fourth chapter human life is "a vapour, that appeareth for a little time, and then vanisheth away" (ver. 14). And in the last chapter, besides the moth and the rust, we have "the fruit of the earth," and "the early and latter rain" (vv. 2, 3, 7, 18).
These instances are certainly very numerous, when the brevity of the Epistle is considered. The love of nature which breathes through them was no doubt learned and cherished in the village home at Nazareth, and it forms another link between St. James and his Divine Brother. Nearly every one of the natural phenomena to which St. James directs attention in this letter are used by Christ also in His teaching. The surging of the sea (Luke xxi. 25), the flowers of the field (Matt. vi. 28), the burning of wood (John xv. 6), the birds of the air (Matt. vi. 26; viii. 20; xiii. 4, 32), the fountain of sweet water (John iv. 10-14; vii. 38), the fig-tree (Matt. vii. 16; xxi. 19; xxiv. 32), the vine (John xv. 1-5), the moth (Matt. vi. 19), the rust (Matt. vi. 19), and the rain (Matt. v. 45; vii. 25). In some cases the use made by St. James of these natural objects is very similar to that made by our Lord, and it may well be that what he writes is a reminiscence of what he had heard years before from Christ's lips; but in other cases the use is quite different, and must be assigned to the love of nature, and the recognition of its fitness for teaching spiritual truths, which is common to the Lord and His brother. Thus, when St. James asks, "Can a fig-tree, my brethren, yield olives, or a vine figs?" we seem to have an echo of the question in the Sermon on the Mount, "Do men gather grapes of thorns, or figs of thistles?" And when St. James tells the rich oppressors that their "garments are moth-eaten; their gold and their silver are rusted," is he not remembering Christ's charge, "Lay not up for yourselves treasures upon the earth, where moth and rust do consume, and where thieves break through and steal"? But in most of the other cases there is little or no resemblance between the similes of Christ and the figurative use of the same natural phenomena made by St. James. Thus, while Jesus uses the flowers of the field to illustrate God's care for every object in the universe, and the superiority of the glory which He bestows over that with which man adorns himself, St. James teaches thereby the transitory character of the glory which comes of riches; and while Christ points to the rain as illustrating God's bounty to good and bad alike, St. James takes it as an illustration of His goodness in answer to patient and trusting prayer.