Solomon
Proverbs 11:19ESV·traditional attribution

Whoever is steadfast in righteousness will live, but he who pursues evil will die.

Matthew Henry Presbyterian @wholebiblehenry

It is here shown that righteousness, not only by the divine judgment, will end in life, and wickedness in death, but that righteousness, in its own nature, has a direct tendency to life and wickedness to death. 1. True holiness is true happiness; it is a preparative for it, a pledge and earnest of it. Righteousness inclines, disposes, and leads, the soul to life. 2.

John Gill Reformed Baptist @doctorgill

As righteousness tendeth to life,.... Or, is unto life: not mere outward acts of moral righteousness; these may be done where there is no principle of spiritual life, and are no other than dead works, and will never bring to everlasting life; indeed the best righteousness of man's is no justification of life, nor can it entitle to it, nor is meritorious of it.

Jamieson-Fausset-Brown Reformed @jfbcommentary

Inference from Pro 11:18 (compare Pro 11:5-6; Pro 10:16).