'Seal Up' in the Bible

And when the seven thunders had uttered their voices, I was going to write: but I heard a voice from heaven saying unto me, Seal up what the seven thunders spake, and write them not.

and cast him into the bottomless pit, and shut him up, and set a seal upon him, that he might deceive the nations no more, till the thousand years be finished: and then he must be loosed for a little time.