'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.

For nothing is hidden except to be revealed, and nothing concealed except to be brought to light.

For nothing is hidden that will not be revealed, and nothing concealed that will not be made known and brought to light.

But they did not understand this statement; its meaning had been concealed from them, so that they could not grasp it. Yet they were afraid to ask him about this statement.