See, Yahweh; for I am in distress; my heart is troubled; My heart is turned within me; for I have grievously rebelled: Abroad the sword bereaves, at home there is as death.
God indeed answered this prayer, in time, bringing an even more terrible judgment upon Babylon than upon Jerusalem.  The awful destruction of Jerusalem actually made the destruction of all the pagan nations surrounding her an urgent necessity from God's viewpoint, because the ancient idea was that the defeat of any nation meant also the defeat of their God.  Thus, the apostasy of God's people and the necessity of their destruction put the purpose of the Almighty absolutely back to square one as far as convincing all nations of his righteous reign among men was concerned.