He deviseth mischief upon his bed; which notes that he doth it,
1. Constantly and unweariedly, preferring it before his own rest.
2. Earnestly and seriously, when his mind is freed from all outward distractions, and wholly at leisure to attend that business about which it is employed: compare Psalms 4:4.
3. Freely, from his own inclination, when none are present to provoke him to it. He setteth himself; he doth not repent of his wicked devices, but resolutely proceeds to execute them, and persists therein. That is not good, i.e. which is very bad, as this phrase is used, 1 Samuel 2:24 Proverbs 20:23, Proverbs 24:23, and elsewhere. He abhorreth not evil: though he sometimes pretends remorse, and desists from his violent practices against me, as Saul did; yet he doth not truly repent of nor abhor his sin, and therefore is ready to return to it, when any occasion offers itself.