This prophecy teaches us that the purposes of God will be fulfilled. Judah had to learn not to trust in alliances with other nations. Those nations were also under the judgment of God. Trusting in people leads to a false sense of security, whereas true safety can only be found in God.
32 Et que répondra-t-on aux envoyés du peuple? Que l'Eternel a fondé Sion, Et que les malheureux de son peuple y trouvent un refuge.