How do we know salvation by grace through faith is true?

The doctrine of salvation by grace through faith is foundational to historic Reformed theology and is backed by a multitude of Scripture passages. Notably, Titus 3:5 emphasizes that God saves us not because of works done by us but purely out of His mercy. This is further affirmed in Ephesians 2:8-9, where it is stated that we are saved through faith, and this is not of ourselves; it is the gift of God. The resurrection of Jesus is the ultimate assurance that God's plan for salvation is true, demonstrating His power over sin and death. Believers' transformations – their ability to live holy lives and perform good works – serve as evidence of this transformative grace, empowering them to walk in obedience that glorifies God.