King James Version (KJV) - Ecclesiastes 7:25 >

I applied mine heart to know, and to search, and to seek out wisdom, and the reason [of things], and to know the wickedness of folly, even of foolishness [and] madness:

Berean Study Bible (BSB) - Ecclesiastes 7:25 >

I directed my mind to understand, to explore, to search out wisdom and explanations, and to understand the stupidity of wickedness and the folly of madness.