What does the Bible say about the freeness of God's grace?

The freeness of God's grace is a clear biblical teaching, notably highlighted in Jonah 2:9, which states that 'salvation is of the Lord.' This emphasizes that salvation, from election to glorification, is entirely God's work and not contingent upon human effort or merit. Romans 9:16 further clarifies that God's mercy in election is not based on human will but solely on God's sovereign choice. Through these scriptures, it is evident that grace must be free from any conditions or contributions from mankind, underscoring the doctrine that salvation belongs entirely to God.