Judah's sin placed them into the slavery of Babylon, but now God promises future forgiveness. How could God deliver them from the most powerful nation in the known world at the time? More than that how does God deliver anyone from the slavery caused by sin? Many of us might think that our circumstances make us beyond saving. Many of us might think that the barriers between us and God are too mighty. Isaiah 40:3-5 speaks of a God of Glory who overcomes every obstacle.