What does the Bible say about the nature of salvation?

The Scriptures clearly declare that salvation is of the Lord, as outlined in several passages such as Jonah 2:9 and Romans 9:16. Salvation is not a result of human effort or decision; rather, it is God's sovereign choice and action in the hearts of sinners. The Apostle Paul emphasizes in Ephesians 2:8-9 that we are saved by grace through faith, and it is not of ourselves, so that no one can boast. This understanding highlights that the entirety of salvation, from initiation to completion, is the work of God alone.