Matthew 11:25

At that time Jesus spake and said, I thank thee, O Father, Lord of heaven and earth, that thou hast hid these things from the wise and the intelligent, and hast revealed them to babes:

Matthew 13:17

For verily I tell you, That many prophets and righteous men have greatly desired to see the things which ye see, and have not seen them; and to hear the things which ye hear, and have not heard them.

Matthew 13:35

that it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables, I will bring forth things hid from the foundation of the world.

1 Corinthians 2:7-10

but we speak the wisdom of God, which had been hid in mystery, which God predestined before the worlds were, for our glory:

Colossians 2:3

in whom are hid 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 spake and said, I thank thee, O Father, Lord of heaven and earth, that thou hast hid these things from the wise and the intelligent, and hast revealed them to babes:
Matthew 13:17
For verily I tell you, That many prophets and righteous men have greatly desired to see the things which ye see, and have not seen them; and to hear the things which ye hear, and have not heard them.
1 Corinthians 2:7
but we speak the wisdom of God, which had been hid in mystery, which God predestined before the worlds were, for our glory:
Colossians 2:3
in whom are hid all the treasures of wisdom and knowledge.