I know that I had not faith, unless the faith of a devil, the faith of Judas, that speculative, notional, airy shadow, which lives in the head, not in the heart. But what is this to the living, justifying faith, the faith that cleanses from sin?

The quote “I know that I had not faith, unless the faith of a devil, the faith of Judas, that speculative, notional, airy shadow, which lives in the head, not in the heart. But what is this to the living, justifying faith, the faith that cleanses from sin?” by John Wesley reflects his distinction between mere intellectual belief and true faith. Wesley explains that faith limited to knowledge or speculation, like that of the devil or Judas, is superficial and ineffective. True faith, he says, must be transformative—alive in the heart—and able to cleanse from sin.

The origin of this quote is tied to Wesley’s personal spiritual journey and his theological teachings as the founder of Methodism. Before his conversion experience at Aldersgate Street in 1738, John Wesley recognized that his faith was more intellectual than experiential. This reflection highlights how Wesley later came to value justifying faith—a faith that leads to genuine repentance, forgiveness, and a personal relationship with God—over a detached, merely notional belief.

By contrasting “speculative, notional, airy shadow” faith with “living, justifying faith,” Wesley underscores that true Christian belief must go beyond the head and be rooted in the heart. It is this heartfelt faith that produces change, cleanses from sin, and brings spiritual assurance. His words call believers to examine whether their faith is truly active and transformative.

Ultimately, Wesley’s quote serves as a powerful reminder that authentic faith is more than theological knowledge. It is a dynamic force that shapes the believer’s life, connects them with God’s grace, and leads to spiritual renewal and salvation.