How do we know that election is a true doctrine in Christianity?

The doctrine of election asserts that God sovereignly chooses individuals for salvation before the foundation of the world. This is supported by multiple passages in Scripture, such as Ephesians 1:4-5, which states, 'He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, having predestined us to adoption as sons by Jesus Christ to Himself.' Furthermore, Romans 9:11-13 highlights God's sovereign choice in His election, showing that it is not based on human merit but solely on His purpose and will. This doctrine is essential in understanding the nature of God's grace and the assurance of salvation, as it affirms that our salvation depends on God’s will, not on our actions.