1 Corinthians 3:20
And again, The Lord knoweth the thoughts of the wise, that they are vain. (1 Corinthians 3:20)
Again.
 A quotation from Ps. 94:11.
They are vain.
 By contrast the man who gladly recognizes his insufficiency and submits to the guidance of the Holy Spirit has true wisdom (see Ps. 94:12; Prov. 3:5-8).