1 Corinthians 2:9-14

But as Scripture says, “No one has ever seen, and no one has ever heard, and no one has ever imagined what God has prepared for those who love him.” But God has revealed this to us through the Spirit, because the Spirit delves into the depths of God. Who knows anyone's thoughts except the actual person? In the same way no one knows God's thoughts except the Spirit of God. For we have received the Spirit from God, not the spirit of this world, so that we could understand what God so generously gave us. That's what we speak about—not using words taught by human wisdom, but what the Spirit teaches. We explain what is spiritual using spiritual terms. Of course people who are not spiritual don't accept what comes from God's Spirit. It's just foolish nonsense to them, and they can't understand it, because what is spiritual has to be properly examined.