How do we know our names are written in the book of life?

The Lamb's book of life is a pivotal concept in Scripture, indicating that God has chosen His elect before the worlds were made. This assurance promotes profound comfort to believers, confirming that their salvation is not uncertain but an outcome of divine predestination. The very act of having one's name recorded signifies an eternal purpose of grace, ensuring that all circumstances in life ultimately culminate in our good and Christ's glory. When Jesus encourages His followers to rejoice in their citizenship in heaven, He underscores the absolute certainty of their standing before God.