The Holy Spirit will show us the hidden mysteries of God through His wisdom. He gifts us understanding, counsel, power, knowledge, and the reverent fear of the Lord. He gives these to us freely, and it is up to us to receive these gifts.

[For I always pray to] the God of our Lord Jesus Christ, the Father of glory, that He may grant you a spirit of wisdom and revelation [of insight into mysteries and secrets] in the [deep and intimate] knowledge of Him. Ephesians 1:17 (AMPC)