Israel's national blessings in every realm, and God's Presence in their midst, are linked to fulfillment of God's Torah. L.A. A small broken remnent will survive exile and regret their leaving God. Then He'll remember His patriarchal covenants and the Land, which celebrated its Sabbatical years, while desolate. God will never abandon His Exodus and Sinai Covenants with Israel. Animals cannot be redeemed, unless unfit for sacrifice.
Animal tithes are random and unredeemable.
Yet, the prophet assures us that God will heal and save the Jews, no matter how low they've sunk, after millennia of alien influence. They'll return to their great mission in the State of Israel, relating to Him as the Truly Praiseworthy. We'll even have truly Jewish universities, to spread, not debunk, God's Word. So we finish Leviticus.