How do we know the promise of eternal life is true?

The assurance of eternal life is grounded in the resurrection of Jesus Christ, as He Himself declared in John 11:25-26 that He is the resurrection and the life, and those who believe in Him shall never die. This truth is echoed throughout Scripture, revealing God's covenant promises and faithfulness. In Romans 8:28-30, we are taught that God works all things for the good of those who love Him, culminating in our eventual glorification. This provides a robust foundation for our faith, ensuring us that the eternal life promised is not only possible but certain for believers who have been called according to His purpose.