Matthew 11:25

At that time Jesus responding said, I praise thee, O Father, Lord of heaven and of earth, because thou hast hidden these things from the wise and the prudent, and reveal them unto babes.

Matthew 13:17

Truly I say unto you, that many prophets and righteous men desired to see those things which you see, and saw them not; and to hear those things which you hear, and heard them not.

Matthew 13:35

in order that the word spoken by Isaiah, the prophet, saying, I will open my mouth in parables: I will make known the things which have been hidden from the foundation.

1 Corinthians 2:7-10

but we speak the wisdom of God having been hidden in a mystery, which God predestinated before the ages unto our glory:

Colossians 2:3

in whom are hidden all the treasures of wisdom and knowledge.

Treasury of Scripture Knowledge

Summary

Seeing it is hid from the eyes of all living, and kept close from the fowls of the air.

Bible References

Hid

Matthew 11:25
At that time Jesus responding said, I praise thee, O Father, Lord of heaven and of earth, because thou hast hidden these things from the wise and the prudent, and reveal them unto babes.
Matthew 13:17
Truly I say unto you, that many prophets and righteous men desired to see those things which you see, and saw them not; and to hear those things which you hear, and heard them not.
1 Corinthians 2:7
but we speak the wisdom of God having been hidden in a mystery, which God predestinated before the ages unto our glory:
Colossians 2:3
in whom are hidden all the treasures of wisdom and knowledge.