God will tell you hidden and secret things

“Call to me and I will answer you, and will tell you great and hidden things that you have not known.” (Jer. 33:3 ESV)

Deep and hidden things

“He reveals deep and hidden things; he knows what is in the darkness, and the light dwells with him.” (Dan. 2:22 ESV)

The things that are revealed belong to us

“The secret things belong to the Lord our God, but the things that are revealed belong to us and to our children forever, that we may do all the words of this law.” (Deut. 29:29 ESV)

The hoards in secret places

“I will give you the treasures of darkness and the hoards in secret places, that you may know that it is I, the Lord, the God of Israel, who call you by your name.” (Isa. 45:3 ESV)

Therefore…

“For God, who said, “Let light shine out of darkness,” has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.” (2 Cor. 4:6 ESV)