Go ... forth ... end of the earth - Primarily, a prophecy of their joyful deliverance from Babylon, and a direction that they should leave it when God opened the way. But the publication of it “to the ends of the earth” shows it has a more world-wide scope antitypically; Rev 18:4 shows that the mystical Babylon is ultimately meant.
redeemed ... Jacob - (Isa 43:1; Isa 44:22, Isa 44:23).