How do we know that God's choice of people is true?

The doctrine of God's sovereign choice is well-established in Scripture. Ephesians 1:4-5 states that God chose us in Christ before the foundation of the world and predestined us for adoption as His children. This underscores that salvation is not based on human efforts or merit but is a gift of grace bestowed on God's elect. The sovereignty of God ensures that His purposes are accomplished, affirming that He saves those whom He determines to save. As Romans 9 reminds us, God is the potter, and we are the clay, highlighting His absolute right to choose whom He wills.