Job 28:7
No bird has knowledge of it, and the hawk's eye has never seen it.
Job 11:6
And would make clear to you the secrets of wisdom, and the wonders of his purpose!
Job 28:21-23
For it is kept secret from the eyes of all living, unseen by the birds of the air.
Job 38:19
Which is the way to the resting-place of the light, and where is the store-house of the dark;
Job 38:24
Which is the way to the place where the wind is measured out, and the east wind sent out over the earth?
Romans 11:33
O how deep is the wealth of the wisdom and knowledge of God! no one is able to make discovery of his decisions, and his ways may not be searched out.