River — A great quantity of water, hyperbolically called a river. Hasteth not — He drinks not with fear and caution; but such is his courage, that he fears no enemy either by water or by land. He drinks as if he designed, to drink up the whole river. He mentions Jordan, as a river well known, in and nigh unto Job's land.
Related Commentaries of Job 40:23
Job 40:23
23 Behold, he drinketh up a river, and hasteth not: he trusteth that he can draw up Jordan into his mouth.