Reformed theology reads James 2:24 as addressing the nature of justification before humans and in the life of faith, not the forensic justification before God (which is by faith alone). Calvin understood James as refuting the false antinomianism of those claiming faith without obedience. Westminster Shorter Catechism teaches that justification is by faith alone, but the faith that justifies is never alone—it is accompanied by sanctification and good works.

Reformed theology distinguishes between justifying faith (which is alone) and living faith (which inevitably produces works). James addresses those who claim to have faith while refusing obedience to Christ's teachings. The passage reinforces that biblical faith includes heartfelt commitment to God's law and practical righteousness. Works are the fruit of the Spirit working in the justified believer.