'Seal Up' in the Bible

Set me as a seal upon thy heart, As a seal upon thine arm: For love is strong as death; Jealousy is cruel as Sheol; The flashes thereof are flashes of fire, A very flame of Jehovah.

Seventy weeks are decreed upon thy people and upon thy holy city, to finish transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up vision and prophecy, and to anoint the most holy.

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