Osparna is an Aramaic adverb meaning diligently, fully, thoroughly, or with all dispatch. It appears in official Persian decrees in Ezra, characterizing the thoroughness expected in carrying out royal commands concerning the rebuilding of the Jerusalem temple.
The Aramaic adverb osparna appears in the context of pagan Persian kings commanding that the temple of the God of heaven be rebuilt diligently. It is a remarkable display of God's sovereignty: the language of diligence, usually associated with devotion to a king, is applied to the rebuilding of God's house. God can press even pagan thoroughness into the service of His redemptive purposes.