'Seal Up' in the Bible

And when the seven thunders had uttered their voices, I was about to write: and I heard a voice from heaven saying to me, Seal up the things, which the seven thunders have spoken, and write them not down.

and cast him into the abyss, and shut him up, and put a seal upon it, that he might deceive the nations no more until the thousand years are completed: and after that he must be loosed a short time.