Doctrine — the seal of the Spirit, the earnest of the inheritance, and where a believer’s assurance actually rests.
Most men I talk to are looking for assurance in the one place it was never deposited: inside themselves. They take their spiritual temperature. They audit the week. They ask whether this morning’s prayer had any heat in it, whether the sermon moved them, whether they feel like a Christian today — and they build or demolish their confidence on the reading.
Paul puts assurance somewhere else entirely. He puts it in a transaction God completed, in language borrowed from a courtroom and a counting house.
“In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise, Which is the earnest of our inheritance, until the redemption of the purchased possession, unto the praise of his glory.” (Ephesians 1:13–14, KJV)
Two words there are doing enormous work, and both of them are older than our English. Sealed. And earnest. Get those two words right and a great deal of anxious Christian living simply loses its grip on you.
What a seal was
In the ancient world a seal was not decoration. A man carried a signet, and when he pressed it into hot wax he was doing two things at once.
First, he was declaring ownership. The mark in the wax was his mark. A sealed jar of grain in a warehouse, a sealed bale on a dock, a sealed letter in a courier’s bag — the seal told everyone who handled it whose it was, and who would answer for anyone who tampered with it.
Second, he was declaring that the contents were secure and unaltered. Break the seal and you have committed an offense against the man whose mark it is. That is why Darius sealed the stone over Daniel’s den, and why the chief priests sealed the tomb. A seal is a claim backed by the authority of the one who set it.
Now read it again. The seal set on a believer is not a feeling, a gift, an experience, or a badge of attainment. The seal is a Person.
“Now he which stablisheth us with you in Christ, and hath anointed us, is God; Who hath also sealed us, and given the earnest of the Spirit in our hearts.” (2 Corinthians 1:21–22, KJV)
Mark the grammar: God is the subject of every verb. He stablisheth. He anointed. He sealed. He gave. Not one of those verbs has you as its actor. You did not seal yourself, which is precisely why your bad Tuesday cannot unseal you.
What “earnest” means, since nobody says it anymore
“Earnest” is the word that trips people, and it is worth slowing down for, because the KJV has preserved something our modern vocabulary mostly lost.
An earnest is a down payment — and not the casual kind. In the commerce of the first century it was the portion handed over at the striking of a bargain, money that did two things no deposit in our ordinary speech does. It was of the same kind as the full price, not a token of a different sort. And it legally bound the buyer to complete the purchase. The earnest was the buyer putting his own standing behind the deal. Walking away did not merely forfeit the deposit; it broke a contract already in force.
We still have the word, barely. If you have ever bought a house in this country you have written a check called earnest money, and your agent explained that it is not a fee — it is proof you mean to close.
So when Paul says the indwelling Spirit is “the earnest of our inheritance,” he is making two claims at once, and they are both staggering.
- Same kind. What you have now is not a different substance from heaven; it is the first installment of it. The communion with God you taste in prayer on a good morning is not a preview reel of glory. It is glory, in the amount a mortal frame can presently hold.
- Legally binding. God has put something of Himself down on you. The completion of the purchase is no longer an open question; it is a commitment He has already entered, at His own initiative, with His own Spirit as the pledge.
And notice the term of the arrangement: “until the redemption of the purchased possession.” The seal has an expiration, and the expiration is the day you are handed over complete — body raised, sin gone, the whole purchase delivered. Paul says the same thing again in the next letter: “ye are sealed unto the day of redemption” (Ephesians 4:30). Unto. All the way to the day. Not until you lapse. Not until the feeling fades.
This is why a bad week cannot be evidence
Here is where the doctrine puts its boots on.
If your assurance rests on your spiritual performance, then every honest self-examination is a threat, and you will eventually stop examining yourself honestly. That is the cruel arithmetic of performance religion: it makes repentance expensive. A man cannot afford to look squarely at his sin if his standing is riding on the result, so he minimizes, he reframes, he compares himself to someone worse, and the sin stays.
But if the seal was set by God, and the earnest was paid by God, and the completion is guaranteed by God, then your examination cannot cost you the thing you were protecting. You are free to look. You can say the whole sentence about yourself out loud. The worst thing you find in there this week is not a crack in the foundation — it is exactly the sort of thing the purchase was made to deal with.
Ephesians 4:30 adds the other half of the truth, and we should not soften it: “And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.” The sealed man can grieve the Sealer. That is a real warning, and it is a far more serious one than the fear it replaces. Notice what Paul does not say — he does not say you can un-seal yourself. He says you can wound the Person who is your security. The relationship is not fragile; it is dear. Sin in a believer’s life is no longer a question of whether God will keep His word. It is a question of whether a son will go on hurting a Father who has pledged Himself to him.
That is a higher motive than fear, and it produces a sturdier holiness. Fear produces performance and hiding. Love for a Father who has already put His own Spirit down on you produces the kind of obedience that keeps going when nobody is watching.
Where to look when you cannot feel it
Someone will ask the honest question: how do I know the seal is on me? Paul answers in the same breath he raises it. “After that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed.” The order is heard, believed, sealed. Not heard, believed, felt, hoped, performed well enough, then sealed.
So the evidence you are looking for is not an emotional reading. It is a settled trust in Christ that you did not manufacture and cannot quite shake — the fact that, dry as this month has been, you still want Him; that sin has become grievous to you rather than merely risky; that the name of Jesus is not neutral to you. Those are the marks of someone the Spirit has taken up residence in.
“The Spirit itself beareth witness with our spirit, that we are the children of God.” (Romans 8:16, KJV)
And if you read all of this and find that you have no interest in Christ at all — that the gospel is a subject rather than a rescue, and the question of your soul bores you — then the honest word is this: there is no seal to find, and you need the thing that comes before it. You need to hear the word of truth and believe it. Christ died for sinners and rose on the third day; He receives every man who comes to Him and casts out none. Come, and the sealing is His work to do, not yours.
God does not make deposits He walks away from
Stop taking your own temperature as if the verdict were in the thermometer. You were bought at a price, marked with a seal you did not set, and God Himself put money down on the sale. The Spirit in you is not a reward for a good quarter. He is the first installment of an inheritance the Buyer has already obligated Himself to deliver in full.
He is not a man who makes a deposit and thinks better of it. He is not going to lose interest between the earnest and the closing. The purchased possession will be delivered, whole, on the day appointed — “unto the praise of his glory,” because the glory in this arrangement was never going to be ours.
Teaching the Word. Watching the Times.
— SmithForChrist