What does the Bible say about God's calling of Abraham?

In Acts 7:1-8, Stephen recounts how God called Abraham out of Mesopotamia, demonstrating God's sovereign grace in choosing him while he was still an idolater. This event emphasizes that Abraham did not seek God on his own; rather, God initiated this calling, illustrating the effectual nature of God's grace that draws His people to Himself. Abraham's response to God's command showcases the transformative power of this divine call, leading him to leave his homeland and family without knowing his destination. This call signifies God's distinguishing grace, which He extends to His chosen ones, drawing them out of darkness into His marvelous light.