How do we know that faith in Christ leads to eternal life?

The assurance of eternal life for believers is deeply rooted in Scripture, which repeatedly emphasizes the significance of faith in Jesus Christ. Jesus Himself declared in John 3:16 that 'whoever believes in him should not perish but have eternal life.' This promise is echoed by the lives and testimonies of Old Testament saints, who lived by faith in the coming Messiah. Their inscriptions and epitaphs remind us that faith is not merely a momentary belief but a lifelong commitment that leads to the hope of resurrection and eternal communion with God.