'Perpetual' in the Bible

"Seventy weeks have been determined concerning your people and your holy city to put an end to rebellion, to bring sin to completion, to atone for iniquity, to bring in perpetual righteousness, to seal up the prophetic vision, and to anoint a most holy place.

and from the time of the turning aside of the perpetual sacrifice, and to the giving out of the desolating abomination, are days a thousand, two hundred, and ninety.