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

The calling of Abraham exemplifies God's grace, as recounted in Acts 7:2-3. Here, Stephen reminds the council that the 'God of glory' appeared to Abraham in Mesopotamia, before he became a patriarch. This event highlights that God's initiative in calling Abraham was not based on Abraham's merit but solely on God's sovereign choice. This underscores the doctrine of election, where God chooses individuals for His purposes without regard to any foreseen good in them, which aligns with Romans 9:11, where the purpose of God according to election is affirmed.