Galatians 1:8-9 "But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed."
Which from the mouth of the soundly converted King Darius would surely be phrased....
Also I make a decree that if anyone alters this edict, a beam shall be pulled out of his house, and he shall be impaled on it, and his house shall be made a dunghill. May the God who has caused his name to dwell there overthrow any king or people who shall put out a hand to alter this, or to destroy this house of God that is in Jerusalem...”(Ezra 6:11-12 ESV)
As Darius decrees the effectual rebuilding of the temple, urged on by the prophetic ministry of Haggai and Zechariah, paid at great cost to himself, so that it should have it's daily sacrifices to bring a pleasing aroma to the LORD until The True and Greater Darius comes. Darius, converted by the gospel preached by Cyrus anticipates the letters to the Hebrews and to Galatia, striking New Testament melodies as the temple is rebuilt and good news comes to all who join themselves to the people of God, cleansed as priestly ministry resumes.
A ministry that must continue day after day - until its ended by Jesus. Jesus the one who fulfills it at the cost of having himself impaled and destroyed... only to rise again himself into the new and greater Temple. There are many pages in Scripture but just one gospel testifying to Christ in his personal appearances, in its types and patterns and in its moments of prophetic ministry.
Darius preaches Christ as he calls for the rebuilding of the great shadow of the Old Testament - the temple - so that men and women from all nations might look to Christ their true King, temple, sacrifice and priest who at extreme cost to himself invites the unclean to come in, to flee the curse and find refuge in himself. Darius' costly ministry brings the unclean nations to the house of God, much more does the True King, Jesus the Christ whose crucifixion offers life to all the peoples of the world.