Proverbs 8:9 (BSB)

They are all plain to the discerning, and upright to those who find knowledge.

From Proverbs 8. Also in the ESV.

Commentary on Proverbs 8:9

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 8:1-11: The will of God revealed to us for our salvation is here largely represented to us as easy to be known and understood, that none may have an excuse for their ignorance or error, and as worthy to be embraced, that none may have an excuse for their carelessness and unbelief. I.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 8:9: They are all plain to him that understandeth,.... Whose understanding is enlightened by the Spirit of God; who is a spiritual man, that has a discerning, and can judge of spiritual things: as for the carnal man, let him have what natural knowledge or wisdom he will, he cannot know these things; for they are spiritually discerned, and can only be discerned by spiritual men.
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 8:9: plain . . . understandeth--easily seen by those who apply their minds. that find--implying search.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Proverbs 8:9: They [are] all plain to him that understandeth, and right to them that find knowledge. (c) Meaning that the word of God is easy to all that have a desire for it and are not blinded by the prince of this world.