Proverbs 14:27, 30 A Sound Heart.
Perhaps it demonstrates how far we are from the biblical conception of wisdom that the couplets of contrast in this book strikes some of us as odd. Physically it is certainly true that a sound heart is life to the whole body. One can imagine that even in the age of Solomon this was understood. “But envy is rottenness to the bones.” (v. 30) In the word, the heart refers to one’s core. So what we learn here is that envy is the chief enemy of a sound spiritual and psychological existence. It goes to the core of a person and destroys one from within.
Envy makes one their own worst enemy. Envy is more than covetousness. It is not only wanting what is another’s, it is wishing and scheming that even if one cannot have it, they do not want the other to enjoy what is rightfully and lawfully theirs. It is being grieved at another’s blessings (Cf. Ps. 112:10). It is a most pernicious evil and brutal form of self-destruction. Those who fear the LORD in the inward parts, and delight themselves in His word and wisdom, are protected from this. “The fear of the LORD is a fountain of life, to turn one away from the snares of death.” (v. 27)