Therefore they say unto God, Depart from us. It is this impunity which leads the wicked to renounce God altogether. They think that they get on very well without God, and consequently have no need to serve him.
Job puts their thoughts into words (verses 14, 15), and thus very graphically represents their tone of feeling. For we desire not the knowledge of thy ways. The wicked feel no interest in God; they do not trouble themselves about him; his ways are "far above out of their sight," and they do not care to know them.