Job 28:7

No bird of prey knows that path, nor has the falcon's eye seen it.

Job 11:6

and that he would show thee the secrets of wisdom! For he is manifold in understanding. Know therefore that God exacts of thee less than thine iniquity deserves.

Job 28:21-23

Since it is hid from the eyes of all living, and kept closed from the birds of the heavens.

Job 38:19

Where is the way to the dwelling of light? And as for darkness, where is the place of it

Job 38:24

By what way is the light divided, or the east wind scattered upon the earth?

Romans 11:33

O the depth of wealth, both of the wisdom and the knowledge of God! How unsearchable are his judgments, and his ways beyond finding out!

Treasury of Scripture Knowledge

Summary

There is a path which no fowl knoweth, and which the vulture's eye hath not seen:

Bible References

A path

Job 28:21
Since it is hid from the eyes of all living, and kept closed from the birds of the heavens.
Job 11:6
and that he would show thee the secrets of wisdom! For he is manifold in understanding. Know therefore that God exacts of thee less than thine iniquity deserves.
Job 38:19
Where is the way to the dwelling of light? And as for darkness, where is the place of it
Romans 11:33
O the depth of wealth, both of the wisdom and the knowledge of God! How unsearchable are his judgments, and his ways beyond finding out!