Solomon
Proverbs 16:9BSB·traditional attribution

A man’s heart plans his course, but the LORD determines his steps.

Matthew Henry Presbyterian

Man is here represented to us, 1. As a reasonable creature, that has the faculty of contriving for himself: His heart devises his way, designs an end, and projects ways and means leading to that end, which the inferior creatures, who are governed by sense and natural instinct, cannot do.

John Gill Reformed Baptist

A man's heart deviseth his way,.... This is to be understood, not of a wicked man, in whose heart is frowardness, and who devises mischief and evil imaginations continually, Pro 6:14; for such are an abomination to the Lord; nor will he direct their goings, or prosper and succeed them in their ways: but of a good man, or righteous man, as Aben Ezra; who...

Jamieson-Fausset-Brown Reformed

(Compare Pro 16:3). directeth--establisheth.