How do we know that salvation is solely God's work?

Salvation is entirely a divine work that originates from God's eternal plan. This is starkly highlighted in Ephesians 1, which underscores that believers were chosen in Christ before the foundation of the world. The act of salvation is not dependent on human effort or decision but is rooted in God's sovereign will. The psalmist writes in Psalm 21 that 'His glory is great in thy salvation', affirming that it is God's work from beginning to end. Jonah famously said, 'Salvation is of the Lord', reiterating this truth. God's providence ensures that all whom He has chosen will be brought to salvation, providing comfort to believers that their hope rests not on their own strength, but on God's unchanging purpose.