John 15:15 NIV

1 Corinthians 2:9-12 NIV
However, as it is written: “What no eye has seen, what no ear has heard, and what no human mind has conceived” — the things God has prepared for those who love him— these are the things God has revealed to us by his Spirit. The Spirit searches all things, even the deep things of God. For who knows a person’s thoughts except their own spirit within them? In the same way no one knows the thoughts of God except the Spirit of God. What we have received is not the spirit of the world, but the Spirit who is from God, so that we may understand what God has freely given us.

Colossians 1:26 NIV
the mystery that has been kept hidden for ages and generations, but is now disclosed to the Lord’s people.

Matthew 13:11 NIV
He replied, “Because the knowledge of the secrets of the kingdom of heaven has been given to you, but not to them.

Revelation 1:1 NIV
The revelation from Jesus Christ, which God gave him to show his servants what must soon take place. He made it known by sending his angel to his servant John,