We know faith without works is dead because the Bible explicitly states this in James 2:17.
The assertion that faith without works is dead is affirmed in Scripture, particularly in James 2:17. This passage asserts that merely holding a belief without any accompanying actions proves that faith is not alive. While works themselves do not save, they are essential as the manifestation of genuine faith. The absence of works serves as a clear indication that true faith is missing.
Scripture References:
James 2:17, James 2:26, Genesis 22:1-14, Joshua 2:1-14
Commentary