If we apply our hearts as Solomon did (Eccl. 7:25) to search out the wickedness of folly, even of foolishness and madness , these verses will assist us in the search and will show us that sin is exceedingly sinful. Sin is the disease of mankind, and it appears here to be malignant and epidemic. 1. See how malignant it is (Ps. 14:1) in two things:— (1.) The contempt it puts upon the honour of God: ...