1 Corinthians 2:9-13

but just as it is written: “Things which eye has not seen and ear has not heard, And which have not entered the human heart, All that God has prepared for those who love Him.”

For to us God revealed them through the Spirit; for the Spirit searches all things, even the depths of God.

For who among people knows the thoughts of a person except the spirit of the person that is in him? So also the thoughts of God no one knows, except the Spirit of God.

Now we have not received the spirit of the world, but the Spirit who is from God, so that we may know the things freely given to us by God.

We also speak these things, not in words taught by human wisdom, but in those taught by the Spirit, combining spiritual thoughts with spiritual words.