Two Witnesses, Not One

Wesley's doctrine of assurance rests on a distinction between two witnesses that work together but are not identical. The direct witness of the Spirit is an inward impression on the soul, immediate rather than reasoned, by which God's Spirit testifies to the believer's spirit that they are a child of God. Wesley treated this as a form of spiritual perception, not a conclusion argued to but a conviction given. The indirect witness is different in kind: it is the believer's own inference, reasoned from the fruit of the Spirit visible in a changed life, the love, joy and peace that Galatians calls the fruit of the Spirit, read as evidence that the direct witness was genuine and not self-deception.

Wesley needed both, because the direct witness alone was vulnerable to enthusiasm, a private feeling mistaken for God's voice, while the indirect witness alone reduced assurance to self-examination and moral bookkeeping, the very thing he had tried and found wanting before Aldersgate. Holding the two together let him teach that assurance was normal, available to any believer who sought it, without making it either purely subjective or purely a matter of works checked off a list. He preached two sermons on the subject, both called The Witness of the Spirit, revising his own earlier account of how the two witnesses relate once he judged his first attempt too easily read as placing the indirect witness first.