Hebrews 11:1
1Now faith is assurance of things hoped for, proof of things not seen.
Wesley: the definition includes justifying faith, but not directly as justifying—faith justifies only as it refers to and depends on Christ. Faith is the subsistence of things hoped for, giving a kind of present subsistence to the good things God has promised; the divine supernatural evidence and conviction of things not seen, particularly of God and the things of God.
This is a living trust that God gives to hearers who believe—assurance and conviction as the believer’s present grasp of what God has promised. Yet the catalog that follows shows this same faith exercised in obedience amid difficulties.
Calvin: this is not an exact definition of the whole of faith, but that part suited to the purpose—that faith has patience ever connected with it. Faith is the hypostasis, the prop of things absent, beyond our understanding; the Spirit shows hidden things the senses cannot reach.
Assurance here is not a human climb into certainty, but the Spirit-wrought support of hope under delay. The just live by faith (10:38); faith regards what is waited for. Do not flatten this into bare optimism; it is God’s word and Spirit lifting the mind above the world.
Key contrast Both refuse a works-righteousness reading of faith and both call hearers to endure what is not yet seen. Arminians typically follow Wesley’s living subsistence and conviction as the believer’s grasp of promised goods—including justifying faith as it depends on Christ. Reformed interpreters hear Calvin’s caution that this is not the whole of faith defined, but faith as the Spirit-given prop of hope, patience included—assurance resting on grace in Christ, not on the believer’s native certainty.