Faith in Christ alone is validated by the work of the Holy Spirit, who testifies to the truth of Christ in the hearts of believers.
The affirmation of faith in Christ alone is grounded in the witness of the Holy Spirit. Romans 8:16 tells us that the Spirit itself bears witness with our spirit that we are children of God. This internal testimony manifests as believers come to recognize their innate inability to save themselves and instead trust in Christ for their righteousness and life. Throughout church history and in the writings of the New Testament, such as in Ephesians 2:8-9, we see that salvation is a gift from God, wholly unmerited and received through faith, reinforcing the belief that faith in Christ alone is indeed true.
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