How do we know the doctrine of divine election is true?

Divine election is a foundational truth in Reformed theology, rooted in Scripture. In Exodus 11:7, the Lord clearly states, 'But against any of the children of Israel shall not a dog move his tongue,' indicating that He set apart the Israelites from the Egyptians. This distinction showcases God's sovereign choice and mercy upon His people, demonstrating that their safety amidst the plagues was by divine will. Furthermore, Romans 9:15-16 reinforces this concept, stating that God's mercy and compassion are bestowed according to His sovereign choice and not on human effort. This doctrine is central to understanding salvation as entirely dependent on God's grace.