What does the Bible say about God's promise in Acts 2:39?

In Acts 2:39, Peter declares, 'For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.' This verse signifies that God's promise of salvation through Christ is not limited to a specific group but extends to all whom He calls, transcending time and geography. The calling of God is critical, as the promise itself is intertwined with His divine election and grace. This assurance of salvation affirms the expansiveness of God's grace, reaching both to those present at Pentecost and beyond, to future generations and those who are spiritually distant.