Sing, O heavens, for YHWH has done it; shout, O depths of the earth; break forth into singing, O mountains, O forest, and every tree in it! For YHWH has redeemed Jacob, and will be glorified in #israel.
Isaiah 44:23

Israel's ultimate repentance and restoration was prophesied long before her apostasy. If God's promises mean anything, then Israel's salvation is sure.