Proverbs 21:2

“Every way of a man [is] right in his own eyes, etc.] This is repeated, from (<201602>Proverbs 16:2,25); for the confirmation of it; and that it might be observed and taken notice of, and men be brought under a conviction of it; which is not easily done, it being what affects all men: every man is conceited of himself and his own way, and is not easily persuaded off of it; his sinful ways are agreeable to him promising him pleasure, profit, or honour; and his self-righteous ways suit with the vain opinion he has of himself, whereby he promises himself eternal life and happiness. The Septuagint and Arabic versions render it to this sense, “every man seems righteous to himself;” but the Lord…”

“(Compare Pro 14:2; Pro. 16:2-25).”

“21:2 This proverb is repeated almost verbatim in 16:2.”

“right: Pro 16:2, Pro 16:25, Pro 20:6, Pro 30:12; Psa 36:2; Luk 18:11, Luk 18:12; Gal 6:3; Jam 1:22 the Lord: Pro 24:12; Sa1 16:7; Jer 17:10; Luk 16:15; Joh 2:24, Joh 2:25; Rev 2:23 Proverbs 21:3”

“The next group extends from Pro 21:2 to Pro 21:8, where it closes as it began. 2 Every way of a man is right in his own eyes; But a weigher of hearts is Jahve. A proverb similar to Pro 16:2 (where דּרכי, for דּרך, זך for ישׁר, רוּחות for לבּות). God is also, Pro 17:3, called a trier, בּחן, of hearts, as He is here called a weigher, תּכן. The proverb indirectly admonishes us of the duty of constant self-examination, according to the objective norm of the revealed will of God, and warns us against the self-complacency of the fool, of whom Pro 12:15 says (as Trimberg in "Renner"): "all fools live in the pleasant feeling that their life is the best," and against the self-deception which walks in…”