'Concealed' in the Bible

Then should I yet have comfort; yea, I would harden myself in sorrow: let him not spare; for I have not concealed the words of the Holy One.

“Yet You concealed these thoughts in Your heart;I know that this was Your hidden plan:

What wise men have told,And have not concealed from their fathers,

It is hidden from the eyes of every living thingand concealed from the birds of the sky.

“Have I concealed my transgressions like Adam or like other men,By hiding my wickedness in my bosom,