How do we know that faith is true?

Believers can have confidence in their faith because it originates from God, as detailed in 2 Thessalonians 2:13, where Paul notes that we are bound to give thanks for God’s choice of us for salvation, achieved through the sanctification of the Spirit and belief in the truth. Ephesians 2:8-9 further reinforces the idea of faith being a gift, emphasizing that we cannot boast about it as it is of divine origin. The very nature of faith is to rest wholly on Christ and His finished work, which provides the assurance that this faith is not only true but efficacious for salvation.