'Concealed' in the Bible

He looked this way and that and saw that no one was there, and then he attacked the Egyptian and concealed the body in the sand.

Then I would yet have my comfort, then I would rejoice, in spite of pitiless pain, for I have not concealed the words of the Holy One.

"But these things you have concealed in your heart; I know that this is with you:

For it has been hidden from the eyes of every living creature, and from the birds of the sky it has been concealed.

Though his hatred may be concealed by deceit, his evil will be uncovered in the assembly.