Solomon
Proverbs 11:3ESV·traditional attribution

The integrity of the upright guides them, but the crookedness of the treacherous destroys them.

Matthew Henry Presbyterian @wholebiblehenry

It is not only promised that God will guide the upright, and threatened that he will destroy the transgressors, but, that we may be the more fully assured of both, it is here represented as if the nature of the thing were such on both sides that it would do it itself. 1.

John Gill Reformed Baptist @doctorgill

The integrity of the upright shall guide them,.... The Spirit of God is the best guide of an upright man; he leads into all truth, and unto the land of uprightness, and continues to be a guide, even unto death; and it is right to walk after him, and not after the flesh: and besides him, the upright man has the word of God as...

Jamieson-Fausset-Brown Reformed @jfbcommentary

guide--to lead, as a shepherd (Pro 6:7; Psa 78:52). perverseness--ill-nature. destroy--with violence.