Assurance of Salvation

​Scripture

The Spirit himself bears witness with our spirit that we are children of God, and if children, then heirs - heirs of God and fellow heirs with Christ, provided we suffer with him in order that we may also be glorified with him.” (Romans 8:16-17)

From the Sermons of John Wesley

“The testimony of the Spirit is an inward impression on the soul, whereby the Spirit of God directly witnesses to my spirit that I am a child of God; that Jesus Christ hath loved me, and given himself for me; and that all my sins are blotted out, and I, even I, am reconciled to God.

This is properly called the full assurance of faith - not a bare conjecture, a feeble hope, or a wavering trust, but a clear, inward conviction, wrought in the soul by the Holy Ghost, that we are the children of God. It is not enthusiasm; it is not presumption. It is the very gift of God, promised in the gospel, sealed to us in Christ, and witnessed to our own heart by the Spirit who cannot lie.”

John Wesley, “The Witness of the Spirit, Discourse I” (1746)

From a Letter of John Newton

“You say you dare not call yourself a child of God. But I ask you this: Do you love him? Do you grieve when you have offended him? Do you run to Christ when your conscience smites you, or do you run from him? Do you find in yourself a hungering and thirsting after righteousness, a longing to know him better, to serve him more faithfully, to love him more purely?

These are not the marks of an enemy of God, my friend. These are the marks of a child who does not yet know his Father’s face. The Spirit witnesses not always in thunder, but often in this still, small voice of longing - this ache for God that the world cannot give and cannot take away. That very longing is his seal upon your soul.”

John Newton, Letters (adapted)

A Word for the Journey

One of the subtler cruelties of the enemy is to convince a true child of God that they are not, in fact, a child of God. He cannot undo your salvation, so he works instead to rob you of the joy of it. He whispers that your doubts disqualify you, that your failures have worn through God’s patience, that the assurance others seem to carry so easily is somehow not available to you. These are lies. Ancient lies, and well-worn ones. But lies nonetheless.

John Wesley understood this battle from the inside. Before Aldersgate, he was a man of formidable religious discipline who lacked the one thing discipline cannot manufacture: the settled, Spirit-given assurance that he was a beloved child of God. The Aldersgate moment did not make him a Christian, many historians believe he was genuinely converted before it. What it gave him was the witness of the Spirit. That inward impression, that direct testimony of the Spirit to his spirit, that he was God’s own. And it changed everything.

John Newton, that sailor, slave-trader-turned-pastor who understood grace from the gutter up, had a different pastoral instinct for those wrestling with assurance. He did not argue them into certainty with syllogisms. He asked them to look at their own heart’s direction. Do you love God? Do you grieve your sin? Do you run toward Christ or away from him when you fail? Newton knew what the anxious soul often forgets: the very longing for God is evidence of the Spirit’s presence. Dead men have no pulse. Dead souls have no hunger.

Paul, writing to the church at Rome, grounds assurance not in our performance but in a double testimony. The Spirit himself, the same Spirit who raised Christ from the dead, witnesses together with our spirit. It is not a solo act of human introspection. It’s a duet. As one person put it, it’s God’s Spirit harmonizing with the deepest register of your redeemed soul to sing the same song: you are his. You belong to him. You are an heir.

Assurance is not arrogance. To be certain of God’s love is not to be proud of your own merit, it’s to be overwhelmed by his. The believer who walks in full assurance does not strut; he kneels. He knows too well what he was saved from, and too well by whom, to think the confidence is his own. It is all of grace, received through faith, sealed by the Spirit, the very Spirit that was promised, given freely, and who will not be taken away.

If you are struggling to feel the warmth of that assurance today, may I offer you Newton’s pastoral question? Do you love him? Even a little? Even through the fog? That love did not originate with you. It is, as John tells us, derivative; we love because he first loved us. The fact that you love him at all, that you are reading these words and hoping they are true, is itself the Spirit’s footprint on the ground of your soul. Press on, dear pilgrim. You are more his than you know. Thanks be to God.

Questions for Reflection

1. How would you honestly describe your present level of assurance of salvation: settled, wavering, or largely absent? What do you believe most contributes to where you are?

2. Is there someone in your life, (a family member, a friend, a fellow pilgrim), who is quietly struggling with doubt or assurance? How might you come alongside them this week with Newton’s pastoral wisdom rather than argument or pressure?

3. Take ten minutes this week in silence with Romans 8:14-17 open before you. Ask the Spirit to witness to you directly. Then write down what you notice, whatever comes, however small. Make this a practice, not a one-time exercise.

A Closing Prayer
From the Prayers of John Calvin, adapted
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O Lord, we confess that we are too prone to cast our eyes downward upon our own unworthiness, and to forget that you have sealed us with your Spirit as a pledge of your love. Grant us, we pray, the full assurance of faith - not in ourselves, but in Christ alone, in whom we are fully known and fully loved. Let your Spirit bear witness with our spirit, that we might walk as your children, free from the bondage of fear, and firm in the hope that does not disappoint. May we neither presume upon your grace nor despair of it, but rest quietly and completely in your mercy, through Jesus Christ our Lord. Amen.

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