How do we know the gift of God is eternal life is true?

The assurance of eternal life as a gift from God rests firmly on the authority of Scripture and the completed work of Jesus Christ. In Romans, it is declared that the gift of God is eternal life, contrasting this with the due wages of sin, which is death. The promises made by Jesus in the New Testament, especially in John 14, reassure believers that because He lives, we too shall live. Furthermore, the transformation in the lives of believers and their faith in Christ is a testament to this truth, revealing the reality of eternal life experienced now and fully realized in the future.