How do we know that Christ's labor grants us eternal life?

The assurance of eternal life rests upon the completed work of Christ, who labored tirelessly to secure salvation for His chosen people. The Apostle Paul teaches that Christ's death and resurrection guarantee that believers will not be held accountable for their sins; instead, they are clothed in His righteousness. This divine transaction, where Christ bears our sins and provides His perfection, cannot fail. Therefore, for those who are in Christ, their salvation is secure because it is based on His unwavering labor and love.