How do we know that God's promises to Israel are true?

In Romans 11, Paul reassures believers that God's calling and gifts to Israel are irrevocable (Romans 11:29). This certainty stems from God's sovereign will and His covenant with the patriarchs, which asserts that He has not completely rejected His people, the Jews. The evidence of God's faithfulness can be seen in the preservation of a faithful remnant throughout history. Even in their rebellion, God's grace continues to operate, drawing both Jews and Gentiles into the fold of salvation. This underscores that God's promises are fulfilled in the person of Christ, who is the true Israel and the fulfillment of the law and the prophets.