How do we know that only the elect are saved?

Jesus himself taught that many are called to the banquet of the kingdom, yet only a few are chosen to enter. In Matthew 22:14, we read, 'For many are called, but few are chosen.' This phrase emphasizes that while the gospel invitation goes out broadly, God's elect—those He has predestined—are the ones who will ultimately respond to that call. This aligns with the doctrine of election, which asserts that God unconditionally chooses certain individuals for salvation, and this selection is not influenced by human merit or decision. It is through God's sovereign grace that He successfully draws His chosen ones to Himself, making their salvation effectual.