'Seal Up' in the Bible

"Son of man, take up a lamentation over the king of Tyre, and tell him, 'Thus says the Lord GOD: "You seal up the sum, full of wisdom, and perfect in beauty.

The vision of the evenings and mornings which has been told is true; but seal up the vision because it refers to many days from now."

Seventy weeks are decreed on your people and on your holy city, to put an end to the transgression, and to make an end to sin, and to atone for iniquity, and to bring in everlasting righteousness, and to seal up vision and prophecy, and to anoint the most holy place.

When the seven thunders sounded, I was about to write; but I heard a voice from the sky saying, "Seal up the things which the seven thunders said, and do not write them."

He said to me, "Do not seal up the words of the prophecy of this book, for the time is near.