In architecture and engineering, the triangle is known for its unmatched strength. Each side supports the others. Remove one, and the structure collapses.
The same is true in the Christian life. A healthy, enduring faith is built on the ironclad unity of Christian doctrine. I believe we can illustrate this with Hebrews 13:8. I want to consider three essential truths from this text, with a reminder that all three sides are necessary to healthy, vibrant, biblical Christianity.
Let’s look at these three truths together:
I. Theological Truth – “Jesus Christ is the same yesterday and today and forever.”
This is a foundational theological statement. Open any solid Systematic Theology to the doctrine of God’s immutability, and you’ll find Hebrews 13:8 cited. It declares that Christ—God the Son—is unchanging.
This isn’t the first time Hebrews makes this argument. In chapter 1, God speaks “of the Son” using Psalm 102, affirming that His years have no end. That’s a psalm about Yahweh, and the writer applies it to Christ.
Jesus is God. Truly. Eternally. Immutably. Hebrews 13:8 is an unshakable theological truth worth meditating on for hours. Jesus Christ is sovereign Lord!
But for the sake of this post, we press on…
II. Soteriological Truth – “Jesus Christ is the same yesterday and today and forever.”
Hebrews highlights the superiority of Christ and reveals that He has always been the key to salvation. This is clear in Hebrews 4:2: “The good news came to us just as to them…”—referring to the wilderness generation. Hebrews 11 affirms that Old Testament saints were saved by faith in the promises of Christ.
That’s why our Confession (1689 Second London Baptist Confession of Faith, Chapter 8, Paragraph 6) actually quotes Hebrews 13:8. Here’s what it says:
Although the price of redemption was not actually paid by Christ until after His incarnation, yet the virtue, efficacy, and benefit thereof were communicated to the elect in all ages, successively from the beginning of the world, in and by those promises, types, and sacrifices wherein He was revealed, and signified to be the seed which should bruise the serpent’s head; and the Lamb slain from the foundation of the world, being the same yesterday, and today and for ever.
This verse isn’t merely theological—it’s covenantal. It’s the foundation of our understanding of how God saves sinners.
A healthy, enduring faith is built on the ironclad unity of Christian doctrine.
The Son of God took on human flesh. Born under the law. The better Adam. The perfect Israel. Every shadow, every sacrifice, every feast pointed to Him.
He offered one sacrifice for all time. He bore God’s wrath. He rose from the dead. He ascended into heaven and sat down. He has perfected His people for all time.
This is the gospel. And it is the same—yesterday, today, and forever. God has always and only saved sinners by the work of Jesus Christ.
A Review
Here are three quick applications from these first two headings. Since Jesus Christ is the same yesterday, today, and forever, we can be sure that:
- God’s Word doesn’t change – It’s immutable, like its Author. Scripture cannot be broken.
- The Bible tells one cohesive story – 66 books with a unified message: Christ saves sinners.
- The Church’s doctrine does not evolve – We don’t adapt truth to culture. We apply the same theology and methodology to every age.
So now we come to the third side of the triangle. We’ve seen the theological and soteriological. But here’s where we’ll spend the most time:
III. Experiential Truth
A literal translation of this verse has no verb. It’s all emphasis on the subject: Jesus Christ, the same yesterday, today, and forever.
This isn’t just something to put in a theology textbook. It’s something for God to write on your heart.
It is certainly true that too many churches today try to preach a “relationship” with Jesus without doctrine—a “one-sided” triangle. But sadly, it is also true that too many in the Reformed world champion theology and soteriology, but lack experiential communion with Christ—a two-sided triangle that leaves the heart unmoved. It’s cold, clinical Calvinism.
Imagine a team of scientists discovers the cure for cancer. You study it. You admire it. You write essays about it. But if you never take it…you perish.
Christ is the same yesterday, today, and forever. That truth must be experienced and not just explained.
Let me give you eight experiential realities that flow from Hebrews 13:8:
1. Confidence
Christ’s righteousness is permanent. Do you trust Him? If so, His righteousness is irrevocably credited to your account.
Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.
Read these words from John Bunyan when this clicked for him and he became a Christian. He writes: “I…saw…that it was not my good frame of heart that made my righteousness better, nor yet my bad frame that made my righteousness worse; for my righteousness was Jesus Christ himself, the same yesterday, and to-day, and forever…”
2. Communion
Jesus Christ is the same. Yesterday, today, and forever. This is not merely a theological truth. It is an experiential truth meant to fuel your communion with Him.
He’s not moody. His attitude is not shifting with the news or a bad night’s sleep. Commune with Him. Commune with the triune God through Him.
There is never a place or time that you cannot pray to God through Him. Stores close. Governments shut down. Friends turn off their phone. But the door of heaven is always open for God’s people to commune with Him through Christ in prayer.
Commune with Him in His Word. Open up the Scriptures and hear His voice to you. He is unchanging. He’s not saying one thing yesterday and changing His mind today. Trust His Word.
3. Comfort
“Cast all your anxieties on him, because he cares for you.”
You don’t have to carry your fears. The same Christ who bore your burdens yesterday will bear them today—and tomorrow. The love that Christ has for you has never changed, and it never will.
4. Contrition
Christ’s view of sin hasn’t changed. Be quick to repent. Why cling to sin He’s already defeated?
“He is the same yesterday, today, and forever.”
The immutability of Jesus ought to cause us to mortify our sins all the more hastily.
5. Contentment
Life sometimes doesn’t go your way. Pain is real. Sorrow is real. Disappointment is real. But Jesus Christ is enough. He is your portion. He is your joy—even when dreams die and plans fall apart.
You truly can be content in Christ. He is enough yesterday. He is enough today. He is enough forever.
6. Courage
Men are changing. Corruptible. Fleeting. Stop regarding man in whose nostrils is breath, for of what account is he? You serve an unchanging Christ. The Lord is on my side; I will not fear. What can man do to me?
The church too often lives in fear. What will the community think? What will the government think? What will my family think?
You don’t have to carry your fears. The same Christ who bore your burdens yesterday will bear them today—and tomorrow.
Let us consider: What does our exalted King think?
He sits above us. But not just above us. “Far above all rule and authority and power and dominion, and above every name that is named, not only in this age but also in the one to come. And he put all things under his feet and gave him as head over all things to the church, which is his body, the fullness of him who fills all in all.”
This is the Sovereign unchanging Christ. Not a hair on your head will be harmed apart from His decree. Let us be courageous in Him.
7. Commitment
Jesus Christ is the same yesterday, today, and forever. What He is committed to is unchanging.
He is committed to the glory of God. He is committed to building up His church. He is committed to expanding His kingdom.
Do you love and serve this King?
Then what He is committed to, we will be committed to.
What if your theology is right and your soteriology is right, but you’re uncommitted to the church? Then you’ve missed it. (And, I would argue, your theology and soteriology aren’t quite right!)
Jesus Christ is the same, yesterday, today, and forever. We must be committed to His Kingdom. Whatever it may cost me to be committed to His cause, so be it. Christ is worthy.
8. Concern
This one isn’t a daily Christian habit. But it must be said.
The holiness of Jesus hasn’t changed. He will not tolerate unrepentant sin. Hypocrisy will be exposed. And on the day of judgment, the unchanging Christ will cast the unrepentant into the Lake of Fire.
He has never changed His mind about sin. He has never given a pass to rebellion. And He never will.
But hear this: He has also never turned away one broken sinner who came to Him in faith. Not one. Why not today? Why not you?
Conclusion
We started this post with a triangle. I wanted to emphasis how essential all three realities that we’ve considered from Hebrews 13:8 are.
What about you?
Do you prize the theology of Christ?
Do you trust in the soteriology of Christ?
Do you know Christ experientially?
You cannot settle for only one or two sides because biblical Christianity is comprised of all three. Jesus Christ is the same yesterday and today and forever.
Know Him. Rest in Him. Love Him. And proclaim Him to the world.
Soli Deo Gloria.
