Why do believers rejoice in their names being written in heaven?

The assurance of salvation is profoundly rooted in the knowledge that believers' names are written in heaven, as presented in Luke 10:20. This reflects their inclusion in God's elect and the security of their salvation. The understanding that their names were written before the foundation of the world speaks to the sovereignty of God in salvation, eliminating any uncertainty about one's standing before God. Such a doctrine inspires joy and reassurance, compelling believers to live in light of their eternal identity and destiny.