Salvation is eternal because it is what God does, and His works are everlasting and cannot be undone.
The assurance of eternal salvation rests in the nature of God's work. As Hebrews 4:3 states, the works were finished before the foundation of the world, which underscores that salvation is not dependent on human effort but on God's eternal decree. God justifies, redeems, and preserves His people, ensuring that their salvation remains secure. Romans 8:30 affirms this, stating that those He predestined are also called, justified, and glorified, signifying a complete and unbreakable chain of salvation that endures through time.
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