Babylon was the most powerful nation of its day, and it was used by God to bring discipline upon the Israelites.  However, God had not abandoned his people, and Babylon was going to be snuffed out.  This final prophecy from Jeremiah is a reminder that God doesn't abandon those He loves even though it may feel at times that His presence is missing.  The problem for us sometimes is that we get overwhelmed by our circumstances and we can't see things from God's perspective.  That's when walking by faith rather than by sight comes into play.  Clinging to God's Truth that He won't leave us or forsake us, we can push through the challenging times and arrive on the other side.  If your situation looks impossible, don't give up.  Continue trusting in the Lord's faithfulness, and He will bring you through to the other side.