How do we know salvation through faith in Christ is true?

The sermon highlights that salvation is not based on human effort or understanding but through simple faith in Christ alone. In Philippians 3, true believers are recognized as those who worship God in the Spirit, rejoice in Christ, and have no confidence in the flesh. This shows that salvation is a gift from God, grounded in divine grace. Verses such as Psalm 37:40 assure that the Lord delivers those who trust in Him, underlining that salvation is established on faith in God's faithfulness.