How do we know salvation is true according to scripture?

The certainty of salvation is profoundly rooted in God's sovereign choice and the redemptive work of Christ. Ephesians 1:4 states that God chose us in Christ before the foundation of the world, affirming that our salvation is not based on our actions or our choice but on God's grace and mercy. Furthermore, Romans 5:5 tells us that hope does not disappoint because the love of God has been poured into our hearts through the Holy Spirit. This love assures us of our position in Christ, reinforcing our confidence that our salvation is secure in Him. Therefore, salvation is true because it rests upon God’s unchanging character and the completed work of Christ, not on our fluctuating faith.