The grand vision of redemption concludes by drawing a sharp line between the bright future of the redeemed and the grim fate waiting for those who do evil. The primary approach among commentators is that these evildoers are the people of Babylon and the Chaldeans, specifically Nebuchadnezzar and his descendants [רש״י, רד״ק]. This message serves to calm the Israelites, assuring them that they no longer need to fear their captors. While Israel will enjoy a blessed return to their homeland, the Babylonians are doomed to destruction at the hands of Cyrus. Peace will be permanently removed from their borders, leaving them with no hope of recovery [מלבי״ם, מצודת דוד, ביאור שטיינזלץ].
A different perspective suggests that the evildoers in question are actually sinners from within the Israelites, particularly those who refuse to leave their exile and return from Babylon [אבן עזרא, שד״ל]. In this interaction, God is not merely making a general statement about their future. According to the traditional reading of the text, God speaks directly to these individuals, personally informing them that they will find no peace [שד״ל].
On a deeper level, God's communication with the wicked reveals a profound lesson about the boundaries of repentance and heavenly mercy. God does not initiate a call for peace to those who are completely wicked, nor does He reach out to them first to urge them to change. However, if these individuals awaken on their own, approach peacefully, and fully repent, He will willingly accept them. This dynamic highlights God's infinite love and compassion for His creations, proving that His mercy never runs out for anyone who chooses to return to Him of their own free will [חומת אנך].