Assurance of Salvation

Assurance of salvation is the settled confidence that a believer is truly justified, reconciled to God, and safe forever in Christ. It matters because it turns faith from a fearful guess into a living hope, and it gives Christians joy, boldness, and perseverance in the face of sin, suffering, and death. The classic Reformed and Puritan authors treated assurance not as a luxury for a few, but as a normal fruit of the gospel, grounded in the finished work of Christ and sealed to the conscience by the Holy Spirit. Their teaching is warm, practical, and deeply pastoral, aimed at troubled consciences and wavering hearts.

The ground of assurance is justification by grace alone

Charles Spurgeon insists that justification is received at the moment of believing, not only after death or at the final judgment (Romans 3:24). He argues that grace surpasses sin because the sentence of the law may be reversed, but the justification given by grace can never be reversed or lost (Romans 5:20). Jonathan Edwards adds that a believer's justification includes both peace with God and access to the hope of glory, not just remission of sins (Romans 5:1–2). Matthew Henry explains that this peace is not merely the end of hostility but includes friendship and loving-kindness, so that God becomes our best friend (Romans 5:1).

Spurgeon is especially forceful that assurance must rest on Christ's finished work, not on the believer's own graces or feelings. He warns that basing peace on one's own graces is foolish because those graces will inevitably droop and fail, leaving the believer without peace (Romans 5:1). He says that looking to one's graces for peace is like drinking from a cistern or a bottle instead of from the living fountain, and it leads to bondage. The believer is saved and at peace with God because God promises salvation to all who believe in Christ, and the believer believes (Romans 5:1).

Stand to this, that Christ has finished your salvation for you, that He has done everything that Omnipotent Justice can ask. He has endured all the penalty, drained the cup of wrath, obeyed the Law completely, given to Divine equity all it can demand—and therefore, believing in His name, standing in His righteousness, accented in His suretyship—you must have peace with God Charles Spurgeon, sermon “Peace By Believing”

A perfect righteousness, namely, that of Christ, is cast about me, and I am so saved today that nothing by any possibility shall ever destroy me. I am saved forever Charles Spurgeon, sermon “Peace By Believing”

Faith, not feelings, is the instrument of assurance

Edwards addresses a common pastoral problem: Christians who doubt whether their first act of faith was genuine. He argues that the first act of faith may be so weak that a believer cannot determine whether it was genuine, so justification cannot depend on identifying that first act. Christians who doubt whether their first act of faith was genuine should still be able to seek pardon and peace with God through present acts of faith. The first act of faith has no special influence in justification beyond being first in time; later acts of faith often give greater assurance of justification in the conscience.

Spurgeon agrees that assurance is not built on a single moment of conversion. He says that judging one's standing before God by present feelings or evidences on a single day is as unreliable as judging the seasons by one day's weather (Romans 3:25). The right order is to look to Christ first as a guilty sinner, and only then read evidences as a confirmation. Graces and evidences are only reflections of Christ's love, so one must go to the light itself before looking at its reflection.

But again, many have fallen into another mistake. They make their propitiation depend upon their evidences Charles Spurgeon, sermon “Christ Set Forth As A Propitiation”

The right way to read evidences is this. First, my Soul, whether you are saved or not, as a poor guilty sinner, look to Christ! When you have done this, then read your evidences—then—not till then Charles Spurgeon, sermon “Christ Set Forth As A Propitiation”

Henry adds that the just live by faith both for the life of grace now and the life of glory to come (Romans 1:17). Abraham did not waver or debate with himself about God's promise, but resolutely ventured everything upon it (Romans 4:20). Abraham was fully persuaded that God was able to perform what he had promised, and this persuasion was built on God's omnipotence (Romans 4:21). Spurgeon says that Abraham's full conviction that God would fulfill His promise produced cheerfulness, contentment, and sacred joy that glorified God before others (Romans 4:20).

The Holy Spirit gives assurance through ordinary means

Henry teaches that the Spirit bears witness with the believer's spirit to their adoption, not by extraordinary revelation but by an ordinary work speaking peace through the means of comfort (Romans 8:16). The Spirit's testimony always agrees with Scripture and is grounded upon sanctification, so the Spirit never witnesses to those who lack the nature and disposition of children. The indwelling of the Spirit of God is the best evidence that a person is in the Spirit (Romans 8:9).

This does not make assurance dependent on perfect sanctification. Henry says that sins that believers sincerely strive against will not be laid to their charge, and through grace the victory over remaining corruption is sure at last (Romans 7:24–25). The believer takes comfort from the covenant of grace, which accepts the willingness of the spirit and provides pardon for the weakness of the flesh (Romans 7:17, 7:20).

Spurgeon warns against making assurance depend primarily on present spiritual evidences. He says that evidences are good as secondary things, but when made primary they usurp Christ's place and may become anti-Christs to Christ (Romans 3:25). Christ is an unchangeable propitiation for sin, so a believer's standing before God does not fluctuate with his frames, feelings, or failures. The righteousness and blood of Christ remain always the same, so believers are always complete and accepted in Christ, never more or less.

Christ is as much my soul's Propitiation when my soul has fallen into sin, as when I have stood firm and resisted temptation, if I am a Believer Charles Spurgeon, sermon “Christ Set Forth As A Propitiation”

The same—the same in all its splendor, the same undimmed, as full of Glory, as full of majesty, the righteousness and blood of Christ abides; and we, standing before God in Him—not in ourselves—are always complete in Him—always accepted in the Beloved; never more so, never less so Charles Spurgeon, sermon “Christ Set Forth As A Propitiation”

Assurance grows through experience and hope

Henry explains that patience produces experience, both of God's consolations in affliction and of our own sincerity through trial (Romans 5:4). Experience strengthens hope, serving not so much as the ground of hope but as its evidence and a special friend to it. This hope does not make ashamed, because it will not deceive us, and it keeps believers from being ashamed of their sufferings (Romans 5:5). The Holy Spirit sheds abroad the love of God in the hearts of all the saints, giving them a sense of God's love to them.

Spurgeon says that believers should trust God's grace and mercy in deep trials because God promises to be with them and help them through every danger (Romans 5:21). Believing that all shall be well when storms and tempests surround you is a work of divine grace and evidence of being a child of God (Romans 4:19–21). Henry adds that the groaning of believers is not a sign of death but of spiritual life, like the pains of a woman in labor (Romans 8:23). Believers have received the first-fruits of the Spirit, which both stirs up their desires and strengthens their hopes for future glory.

He who, being thus tried, comes forth as gold, will thereby be encouraged to hope. This experiment, or approbation, is not so much the ground, as the evidence, of our hope, and a special friend to it Matthew Henry, “Exposition of the Old and New Testaments”

This hope will not disappoint us, because it is sealed with the Holy Spirit as a Spirit of love. It is the gracious work of the blessed Spirit to shed abroad the love of God in the hearts of all the saints. The love of God, that is, the sense of God's love to us, drawing out love in us to him again Matthew Henry, “Exposition of the Old and New Testaments”

The certainty of final salvation rests on God's love in Christ

Henry argues that if God justified and reconciled us while we were still enemies, then certainly he will save us now that we are justified and reconciled (Romans 5:9–10). The salvation from wrath mentioned here is the final justification and absolution of believers at the last day, together with their preparation for it (Romans 5:9). Glorification is spoken of as already done because of its certainty, since nothing can come between the justified soul and glory (Romans 8:30). Because salvation depends entirely on God and not on fickle or feeble creatures, believers may have strong encouragement to faith and hope.

Spurgeon declares that the justified person is fully absolved and indissolubly united to glory, so that no charge, condemnation, or created thing can separate them from the love of God in Christ (Romans 5:20, 8:33–39). Scripture clearly teaches that Christ's sheep have eternal life and shall never perish, because no one can pluck them from Christ's hand or the Father's hand (Romans 3:27). God cannot reject anyone who believes in Christ, because doing so would reverse His nature, stain His honor, and make His word and Christ's atonement false (Romans 3:25).

I cannot be condemned if I am once justified; fully absolved I am by grace. I defy Satan to lay hands on me, if I am a justified man. The state of justification is an unvariable one, and is indissolubly united to glory Charles Spurgeon, sermon “Law and Grace”

It is not possible for the Lord, unless He could reverse His Nature, to stain His honor, belie His Character, make His Word a farce, and the Atonement of Christ a falsehood—to reject any man under Heaven who believes in Christ, and takes Him to be His All-in-All Charles Spurgeon, sermon “Christ Set Forth As A Propitiation”

Henry adds that God's giving of his own Son is the foundation of the believer's hope and the proof of his love (Romans 8:32). Since God gave Christ for believers, he will also give them Christ himself and apply all the benefits of his purchase to them. It is unthinkable that God would give the greater gift of his Son for enemies and then deny lesser good things to those who are now his friends and children. Believers may argue by faith against fears of want, since God who has prepared a crown and kingdom for them will supply what is needed on the way to it.

Assurance produces joy, boldness, and grateful service

Spurgeon says that the first effect of having peace with God is joy, since no one who has God as Father can remain miserable (Romans 5:1). Peace with God should produce overflowing joy and a foretaste of heavenly joy. Because heaven is given by grace, believers may enter it with boldness, gladness, and confidence (Romans 5:21). Knowing that all sins are forgiven and that Christ will bring the believer safely to glory produces grateful service (Romans 3:27).

Henry agrees that those who hope for heavenly glory have reason to rejoice now, and it is their duty to do so (Romans 5:2). Believers not only escape wrath but joy in God himself through Jesus Christ, by whom they have now received the atonement (Romans 5:11). Joy and peace arise from a sense of justification and promote unity among believers (Romans 15:13). Joy in the Holy Ghost is spiritual joy worked by the Spirit in believers, respecting God as their reconciled Father and heaven as their expected home (Romans 14:17).

Those who hope for the glory of God hereafter have enough to rejoice in now. It is the duty of those that hope for heaven to rejoice in that hope Matthew Henry, “Exposition of the Old and New Testaments”

We joy in God, not only saved from his wrath, but solacing ourselves in his love, and this through Jesus Christ, who is the Alpha and the Omega, the foundation-stone and the top-stone of all our comforts and hopes—not only our salvation, but our strength and our song; and all this (which he repeats as a string he loved to be harping upon) by virtue of the atonement, for by him we Christians, we believers, have now, now in gospel times, or now in this life, received the atonement Matthew Henry, “Exposition of the Old and New Testaments”

Spurgeon also addresses the backslider who has lost his peace. A backslider who once had a real hope in Christ should remember that his former faith was not necessarily hypocrisy (Romans 5:1). Believers who have lost their peace should trust in God's promise alone, even when they see no evidence in themselves. Trusting in anything besides Christ—such as repentance, faith, feelings, knowledge, or sense of need—destroys peace. Deeper peace comes by continuing to go to Christ believingly and meditating upon Him, which strengthens weak faith.

Differences in emphasis among the authors

These authors agree on the core of assurance: it is grounded in justification by grace through faith in Christ, sealed by the Spirit, and certain because of God's unchanging love. Yet they differ in emphasis. Spurgeon is the most polemical against making evidences primary, insisting that Christ's blood alone is the ground of peace. He says that if a person believes in Christ's precious blood, no sin stands against them in God's book, whatever their evidences may seem to say (Romans 3:25). Christ is the all-sufficient propitiation for every sin of the believer, whether great or small, old or new.

Edwards is more careful to show how evidences function pastorally. He argues that God makes promises to signs of faith for the comfort of our consciences, since we need evidence to know that we have true faith (Matthew 6:14). A forgiving spirit in us can serve as evidence that we have truly embraced the free forgiveness of sins through Christ, enabling us to apply the promises of forgiveness to ourselves with greater comfort. God may grant subsequent acts of fatherly forgiveness to justified saints as a reward for their forgiving others, without implying they had fallen from a justified state (Matthew 6:14–15).

Henry emphasizes the Spirit's ordinary work through means and the believer's experience of God's consolations. He says that God's searching of the heart is a comfort to sincere Christians, because he hears and answers desires that cannot be expressed in words (Romans 8:27). Believers know this truth for a certainty from the word of God, from their own experience, and from the experience of all the saints (Romans 8:28). Making our calling sure is the only way to make our election sure (Romans 8:30).

And though God does not stand in need of signs to know whether we have true faith or not, yet our own consciences do; so that it is much for our comfort that promises are made to signs of faith Jonathan Edwards, “Justification by Faith Alone”

Finding in ourselves a forgiving temper and disposition, may be a most proper and natural evidence to our consciences, that our hearts have, in a sense of our own utter unworthiness, truly closed and fallen in with the way of free and infinitely gracious forgiveness of our sins by Jesus Christ; whence we may be enabled, with the greater comfort, to apply to ourselves the promises of forgiveness by Christ Jonathan Edwards, “Justification by Faith Alone”

These differences are complementary rather than contradictory. Spurgeon guards the ground of assurance; Edwards explains the evidences of assurance; Henry describes the experience of assurance. Together they teach that assurance is a reasoned confidence built on the promises of God, confirmed by the Spirit, and enjoyed through faith in Christ alone.