Having thus directed them to look for the source of temptation in themselves alone, and warned them against supposing that temptations could come from God; he now further opposes to this delusion the thought, -- that only whatever is good, whatever is true, proceeds from Him. As he is the Father of all material light, so is he also the Father of all spiritual light. With him, therefore, can be no alternation of light and darkness. From him, the unchangeable fountain of light raised above all darkness, nothing which tempts to evil can proceed. As light and all that is good, so darkness and all that is evil, are uniformly classed together in the Holy Scriptures.