Why is understanding the concept of God's calling important for Christians?

God's calling is a pivotal theme in the New Testament, especially in Romans 8:30, where it illustrates that those whom God predestined, He also called. This calling is an effectual summons that cannot be resisted by those who are chosen. Recognizing being 'called according to His purpose' ensures that Christians understand their identity in God’s sovereign plan, which cultivates a sense of assurance and belonging. The calling exemplifies God's initiative in salvation, affirming that believers are not merely passive recipients but participants in His divine purpose.