What does the Bible say about God’s sovereignty in salvation?

Scripture reveals the sovereignty of God in salvation, emphasizing that it is ultimately God who chooses and calls His people. In Ephesians 1:4-5, it states that 'he chose us in him before the foundation of the world,' illustrating that God's decision precedes any human action. Furthermore, Romans 9:15-16 reinforces this by highlighting that God's mercy is not dependent on human will or effort, but solely on His calling. This perspective challenges the notion of free will in salvation, affirming instead that it is God's initiative that saves.