Tertullian

Isaiah even so early, with the clearness of an apostle, foreseeing the thoughts of heretical hearts, asked, "Who hath known the mind of the Lord? For who hath been His counsellor? With whom took He counsel? ... or who taught Him knowledge, and showed to Him the way of understanding? " With whom the apostle agreeing exclaims, "Oh the depth of the riches both of the wisdom and knowledge of God! how unsearchable are His judgments, and His ways past finding out!" "His judgments unsearchable," as being those of God the Judge; and "His ways past finding out," as comprising an understanding and knowledge which no man has ever shown to Him, except it may be those critics of the Divine Being, who say, God ought not to have been this, and He ought rather to have been that; as if any one knew what is in God, except the Spirit of God. Moreover, having the spirit of the world, and "in the wisdom of God by wisdom knowing not God," they seem to themselves to be wiser than God; because, as the wisdom of the world is foolishness with God, so also the wisdom of God is folly in the world's esteem. We, however, know that "the foolishness of God is wiser than men, and the weakness of God is stronger than men."