How do we know that James 2:26 is true?

James 2:26 asserts, 'For as the body without the spirit is dead, so faith without works is dead also.' This truth is supported by concrete examples from Scripture, such as Abraham, who was justified by works when he offered Isaac (James 2:21), and Rahab, who was justified by her actions in receiving the spies (James 2:25). These examples illustrate that real faith naturally expresses itself through deeds, thereby validating the claim that faith devoid of works is lifeless and ineffective in the context of salvation.