Knoweth not, i.e. he doth not consider it seriously, whereby he proveth his folly.
Related Commentaries of Proverbs 9:18
Proverbs 9:18
18 But he knoweth not that the dead are there; and that her guests are in the depths of hell.
Knoweth not, i.e. he doth not consider it seriously, whereby he proveth his folly.
18 But he knoweth not that the dead are there; and that her guests are in the depths of hell.