"Also, Judah, there is a harvest appointed for you, When I restore the fortunes of my people.
The real captivity of God's people had nothing to do with their being carried off to Assyria and to Babylon, those episodes having been the result of their captivity to sin, the real captivity with which God was ever concerned.  This is apparent from the noble words of Jesus Christ himself in Luke, "He hath sent me to proclaim release to the captives" (Luke 4:18), a prophecy which Jesus gloriously fulfilled, without ever getting anybody out of jail!  The great captivity is that of captivity in the service of the devil.