'Seal' in the Bible

And the vision of the evening and the morning that has been {described}, it [is] true; and you, seal [up] the vision, for {it refers to many days to come}."

"Seventy weeks is decreed for your people and {for your holy city}, to put an end to the transgression and to seal [up] sin and to make atonement for guilt and to bring [in] everlasting righteousness and to seal vision and prophet and to anoint {the most holy place}.

But you, Daniel, keep the words secret and seal the scroll until [the] time of [the] end; many will run back and forth and knowledge will increase."