How do we know God's sovereignty in saving His people is true?

The truth of God's sovereignty in saving His people is illuminated through verses like Ephesians 1:4-5, which state that believers were chosen in Christ before the foundation of the world. This emphasizes that salvation is not a reaction to human choice but is part of God's eternal decree. The narrative in the Bible shows that God has a people whom He has loved with an everlasting love, and His actions throughout history testify to His faithful and unchanging purpose to save those whom He has called.