A desire is the heart’s longing for something that can be either good or bad. A heart that has a longing after what is godly will find satisfaction. Their satisfaction will be sweet to the soul meaning that their lives will be filled with the riches of God’s blessings. The fool finds delight in evil practices which he will not turn away from wanting to indulge himself in doing. He will not give up the evil longings of his heart which will become an abomination to him meaning that when he does wrong it will bring judgement upon them. They will not tolerate being unable to engage in sinful activities. Sin never fully satisfies and only leads to eternal disappointment.
19 A desire fulfilled is sweet to the soul, but to turn away from evil is an abomination to fools.