Proverbs 24:9 (BSB)

A foolish scheme is sin, and a mocker is detestable to men.

From Proverbs 24. Also in the ESV.

Commentary on Proverbs 24:9

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 24:7-9: Here is the description, 1. Of a weak man: Wisdom is too high for him; he thinks it so, and therefore, despairing to attain it, he will take no pains in the pursuit of it, but sit down content without it. And really it is so; he has not capacity for it, and therefore the advantages he has for getting it are all in vain to him.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 24:9: If thou faint in the day of adversity,.... When under bodily afflictions, stripping providences, reduced to great straits and wants; or under the violent persecutions of men, which is sometimes the case of the people of God; whose times are in his hands, times of adversity, as well as prosperity; and which are appointed by him, when they shall come, and how long they shall...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 24:9: Pro 24:9 This proverb is connected by זמת with Pro 24:8, and by אויל with Pro 24:7; it places the fool and the mocker over against one another. The undertaking of folly is sin; And an abomination to men is the scorner. Since it is certain that for 9b the subject is “the scorner,” so also “sin” is to be regarded as the subject of 9a.