John 15:15 NKJV

1 Corinthians 2:9-12 NKJV
But as it is written: “Eye has not seen, nor ear heard, Nor have entered into the heart of man The things which God has prepared for those who love Him.” But God has revealed them to us through His Spirit. For the Spirit searches all things, yes, the deep things of God. For what man knows the things of a man except the spirit of the man which is in him? Even so no one knows the things of God except the Spirit of God. Now we have received, not the spirit of the world, but the Spirit who is from God, that we might know the things that have been freely given to us by God.

Colossians 1:26 NKJV
the mystery which has been hidden from ages and from generations, but now has been revealed to His saints.

Matthew 13:11 NKJV
He answered and said to them, “Because it has been given to you to know the mysteries of the kingdom of heaven, but to them it has not been given.

Revelation 1:1 NKJV
The Revelation of Jesus Christ, which God gave Him to show His servants—things which must shortly take place. And He sent and signified it by His angel to His servant John,