Deuteronomy presents a covenantal framework where God's blessings are conditional upon obedience, with repeated warnings of curses for disobedience and promises of restoration through repentance and a circumcised heart. The book emphasizes that true Israel is not defined by physical descent but by faith and spiritual renewal, as seen in the promise of a new heart and the internalization of God's law—fulfilled in the New Covenant through Christ. This spiritual Israel includes both Jews and Gentiles, who are united in Christ, grafted into the true vine, and inherit the promises not by law but by grace. The regathering of Israel is not a literal return to the land in 1948, but a spiritual restoration of all nations to God through faith in Jesus, fulfilling prophecies like those in Isaiah and Ezekiel, which point to a new creation where peace, righte ...