ANYONE who is Christ’s, is Israel, heirs according to the promise. God’s people.
Let me put it another way that perhaps you’ll understand: You and your SDA cult are not PHYSICAL Israel, and there yet remains salvation for Israel. (Read the Hebrew Epistles sometime and try to understand to whom they are directed and why they are so very different from our dear Apostle Paul’s epistles. Just try it once. It won’t bite you. Think: What happened to Peter’s ministry?)