How do we know that believers are God's elected people?

The belief in election is foundational to Reformed theology, with verses such as 2 Thessalonians 2:13 affirming that God has chosen His people from the beginning for salvation through sanctification. This choice is not arbitrary, but a divine plan rooted in God's love and mercy, demonstrating that we are not merely recipients of grace but also those whom God has actively selected to be called saints in Christ Jesus. This understanding reassures believers of their secure standing in God's salvific plan.