Let thistles grow; - Genesis 3:18. Thistles are valueless; and Job is so confident of entire innocence in regard to this, that he says he would be willing, if he were guilty, to have his whole land overrun with noxious weeds.
And cockle - Cockle is a well known herb that gets into wheat or other grain. It has a bluish flower, and small black seed, and is injurious because it tends to discolor the flour. It is not certain by any means, however, that this is intended here. The margin is, noisome weeds. The Hebrew word באשׁה bo'shâh is from באשׁ bâ'ash, “to have a bad smell, to stink,” and was given to the weed here referred to on that account, compare Isaiah 34:3. The cockle however, has no unpleasant odor, and the word here probably means noxious weeds. So it is rendered by Herder and by Noyes. The Septuagint has βάτος batos, bramble; the Vulgate, spina, thorn; Prof. Lee, prunus sylvestris, “a bramble resembling the hawthorn;” Schultens, labrusca, wild vine.
The words of Job are ended - That is, in the present speech or argument; his discussions with his friends are closed. He spoke afterward, as recorded in the subsequent chapters, but not in controversy with them. He had vindicated his character, sustained his positions, and they had nothing to reply. The remainder of the book is occupied mainly with the speech of Elihu, and with the solemn and sublime address which God himself makes.