'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 of it are flashes of fire, a most vehement flame.

Son of man, take up a lamentation over the king of Tyre, and say to him, Thus says lord LORD: Thou seal up the sum, full of wisdom, and perfect in beauty.

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 pr

And when the seven thunders uttered, I was going to write. And I heard a voice from heaven saying, Seal up what the seven thunders uttered, and do not write them.