Faith is shown to be sufficient for salvation as it is the means by which righteousness is imputed to believers.
The sufficiency of faith for salvation is illustrated vividly in Romans 4, where Paul recounts the example of Abraham. He explains that Abraham was justified by faith before he was circumcised, demonstrating that it is not outward works or adherence to the law that grants righteousness, but rather faith alone. The righteousness of God is imputed to those who believe, regardless of their previous status regarding the law, affirming that salvation is by grace through faith and not by works.
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