How can I obtain assurance of my salvation?

There are weeks when you are settled about it, and weeks when you are not. A sermon lands, or a verse does, and for a few days you know you belong to Christ. Then Wednesday comes, or a sin you thought you had left behind comes back, and the whole thing feels like something you talked yourself into.

Before you go looking for more evidence, consider that the trouble may not lie where you assume. It may not be your salvation that is in question. It may be your certainty about it. Those are two different things, and treating them as one is why some believers spend years unnecessarily wretched.

Whether you are saved is settled by God. He does not save a man halfway. That work is His, and nothing you feel today alters it by a fraction.

Whether you know you are saved is a separate matter, and that one moves. It is affected by how much you have slept, by what you have been reading, by whether you are carrying a sin you have not dealt with, by grief and by illness. David is the proof of it. After the worst period of his life — adultery, and a man killed to cover it — he prayed this:

Psalm 51:12 (NKJV)

Restore to me the joy of Your salvation, and uphold me by Your generous Spirit.

Read what he asks for. Not to be saved. He calls it Your salvation and asks for its joy back, which means the salvation was still his while the joy of it was gone. What David had lost was not his standing before God but his enjoyment of that standing. A man can be held fast by God and be miserable about it at the same time.

That distinction matters most when you look at the advice usually handed to a doubting Christian, because almost all of it points him backwards. Someone tells him to remember the prayer he prayed. Someone asks whether he has the date written in the back of his Bible. Someone reminds him that he walked to the front during an altar call.

Every one of these carries the same fault. They rest your confidence on something you did on a particular day, and your certainty about a past act is only ever as strong as your memory of it and your mood today. Think of a photograph left too long in the sunlight. The picture in your hand has faded until you can barely make out who is in it, and squinting harder will not bring the colours back. The prayer you prayed at fifteen is a sentence you can no longer reconstruct. The feeling you had that night was real, and it went, because feelings go.

There is a second fault. A prayer can be prayed by a man who was never converted. An aisle can be walked for the sake of a friend who walked first. A date can be written in a Bible by someone who has since walked away from God entirely. The act you are leaning on cannot carry the weight, because the same act has been performed by people who were not saved by it. You are asking a piece of your own history to tell you something it was never able to tell you.

Christ does not fade, and Christ has not changed His mind. Assurance grows as you stop interrogating your past and start looking at Him.

Assurance still goes missing in genuine believers, and the reasons are worth knowing. Unconfessed sin dims it every time; a man cannot hold on to something he knows grieves God and expect to feel close to Him, and God is kind enough not to let him. Bad teaching destroys it outright — teaching that puts salvation back into the hearer's hands, so that every sermon becomes a fresh test of whether he has held on tightly enough this week. A man taught that way can never be sure, because the question is never settled. It weakens in Christians who have drifted from the ordinary things God uses to strengthen His people. And some of it is nothing more spiritual than temperament and circumstance. Grief flattens assurance. So does exhaustion, and so does depression, in people whose faith is entirely intact. If you have been ill or bereaved or sleeping badly for months, do not read your flatness as a verdict on your soul.

Where it has gone for any of these reasons, it comes back the way it was built: sin confessed and left, preaching sat under week after week, prayer resumed when it feels like nothing, the Lord's Table taken with God's people. None of it is quick, and none of it works like machinery. God is the one who gives assurance back, and He usually does it slowly.

So where does assurance come from? Three things.

The first is God's promise, which stands regardless of your feelings.

1 John 5:11–12 (NKJV)

And this is the testimony: that God has given us eternal life, and this life is in His Son. He who has the Son has life; he who does not have the Son of God does not have life.

Read where John puts the life. Not in the believer's strength of grip, not in the warmth of his feelings, not in his memory of a night years ago — in the Son. So the question is never how much life you can detect in yourself. It is whether you have Christ.

The second is the evidence of God's work in you — the marks that a real change has taken place. It is right to look for them.

The third is the work of the Spirit.

Romans 8:15–16 (NKJV)

For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, “Abba, Father.” The Spirit Himself bears witness with our spirit that we are children of God,

Abba is Aramaic for father — the word used at home, by grown sons as well as small ones. Paul says that when you call God that, and mean it rather than reciting it, the Spirit has produced it in you, because it is not natural to anyone. An unbeliever can be afraid of God, or angry with Him, or indifferent to Him. What he does not do is turn to Him. When something frightens him, God is not where he goes. So if your first movement in trouble is towards God rather than away from Him, something has been done in you that you did not do yourself.

You may say your praying has felt like nothing for weeks. Perhaps it has. But you kept praying — and you kept praying to Him.

Paul wrote this from a prison cell near the end of his life:

2 Timothy 1:12 (NKJV)

For this reason I also suffer these things; nevertheless I am not ashamed, for I know whom I have believed and am persuaded that He is able to keep what I have committed to Him until that Day.

Read what Paul is sure of. Not what he believes — whom. And not that he is holding on well, but that Christ is able to keep what he handed over. The word he uses is the ordinary one for money left with someone for safekeeping. Paul made that deposit years earlier, and now he is in a cell with nothing else to point to — no ministry left to run, no evidence to produce, no strength to show. His certainty rests entirely on the competence of the One he left it with.

You will have mornings when you cannot feel any of this, and weeks when you cannot find it. What you handed to Christ is in His keeping, and He will still have it on that Day.