1 Corinthians 2:12

But we received, not the spirit of the world, but the spirit which is from God; that we might know the things that were freely given to us of God. [As a man alone knows himself, so God alone knows himself. As the thoughts and intentions of a man are best known by his own spirit, so also are the divine counsels of God best known by the Spirit of God. If a man's knowledge of himself surpasses that of his neighbor who knows him well, much more must the revelation of the unseen God by his Spirit far surpass all the speculations of mankind with regard to him. But this revelation of God the apostles enjoyed, through the Spirit of God, who guided them into all truth (John 16:13). How superior, then, was their knowledge to that of worldly philosophy, even if it embraced the collective knowledge of all men.]