My brethren; i.e. "my three friends," Eliphaz, who has spoken; Bildad and Zophar, who by their silence have shown their agreement with him. Have dealt deceitfully as a brook; i.e. "a winter torrent"—a "wady," to use the modern Arab expression.
These watercourses are characteristic of Palestine and the adjacent regions. "During the winter months," says Dr. Cunningham Geikie, "they are often foaming rivers; but in the hot summer, when they would be of priceless value, their dry bed is generally the road from one point to another.
The water rushes over the sheets of rock as it would from the roof of a house, and converging, as it descends, into minor streams in the higher wadies, these sweep on to a common channel in some central valley, and, thus united, swell in an incredibly short time into a deep, troubled, roaring flood, which fills the whole bottom of the wady with an irresistible torrent … The streams from Lebanon, and also from the high mountains of the Hauran.
send down great floods of dark and troubled waters in spring, when the ice and snow of their summits are melted; but they dry up under the heat of summer, and the track of the torrent, with its chaos of boulders, stones, and gravel, seems as if it had not known a stream for ages.
So Job's friends had in former times seemed as if they would be true to him for ever; but their friendship had vanished, like the rush of the torrent that had passed away". And as the stream of brooks they pass away; or, the channel; i.
e. the wady itself. Canon Cook well says on this, "The simile is remarkably complete. When little needed, the torrent overflows; when needed, it disappears. In winter it does not fertilize; in summer it is dried up.
Nor is it merely useless; it deceives, alluring the traveller by the appearance of verdure, promising refreshment, and giving none."