How can we know the doctrine of perseverance of the saints is true?

The doctrine of perseverance of the saints is rooted in the understanding that God's sovereignty undergirds the salvation of His people. Romans 8:28-30 outlines a golden chain of redemption, ensuring that those whom God foreknew are also predestined, called, justified, and ultimately glorified. This means that genuine believers will not ultimately fall away from grace, as their salvation is secured by God’s unchanging purpose. This doctrine provides deep comfort, assuring Christians that their hope is not dependent on their own efforts, but on the faithfulness of God who calls and sustains them.