By Michael A. Graham
Jack wrote: “The foundation of the whole Christian life is justification by faith alone. Once that is settled, every other aspect of Christian growth and change is simply learning how to build upon that foundation.”
The metaphor is architectural. The foundation is complete. The foundation doesn’t change. Every day you wake up, the foundation is still there, it hasn’t moved, it hasn’t crumbled. Your justification is settled. It is immovable. What changes is what you are building on top of it.
The Foundation That Everything Rests On
Justification is not something that God is still deciding about you. It is not conditional on your performance. It is not more true on good days and less true on bad days. You are justified. Right now. As you read these words.
Paul’s letter to the Romans is essentially a meditation on this foundation. It begins with the problem: “All have sinned and fall short of the glory of God” (Romans 3:23). It continues with the solution: “All are justified freely by his grace through the redemption that came by Christ Jesus” (Romans 3:24). And then it unfolds the implications of living out of that foundation.
The foundation is not a ladder. It is not something you are working toward. It is something that is already in place. Your faith rests on it. And from that resting place, you begin to build.
What You Are Building
So what are you building on the foundation of justification? Jack said you are building holiness. But not the kind of holiness that earns you anything. Not the kind that makes you more justified. Not the kind that proves anything to anyone. You are building the kind of holiness that is simply the outworking of who you actually are.
You are justified. You are loved. You are accepted. You are adopted. So you build your life in response to those truths. You build a life that reflects the character of Christ because you actually belong to Him. You build a life that loves others because you have been loved. You build a life of honesty because you don’t have anything to hide anymore.
This is the progression Paul sets up in Romans. Chapters 1 through 8 establish the foundation: justification by faith, reconciliation, the reality of the new creation, the presence of the Spirit. Then chapters 12 through 16 unfold what it means to actually live on that foundation. “Therefore, I urge you, brothers and sisters, in view of God’s mercy, to offer your bodies as a living sacrifice, holy and pleasing to God — this is your true and proper worship” (Romans 12:1).
Notice the word “therefore.” It points back to chapters 1 through 8. Because of the foundation that has been laid, therefore live your life in response. The holiness is not the foundation. The holiness is what you build on the foundation.
The Danger of Building on a Faulty Foundation
The entire book of Galatians is Paul confronting a situation where the Galatian churches had forgotten this. They had started on the foundation of justification by faith. But they had become convinced that the foundation wasn’t complete. That they needed to add something to it. That they needed to add works of the law, or at least some mark of special devotion, to make their justification more secure.
Paul’s response is sharp: “Having begun by the Spirit, are you now being perfected by the flesh?” (Galatians 3:3) They had built on a complete foundation and now they were trying to replace it with something they could control. They were trying to complete a foundation that was already complete.
The problem isn’t that they were trying to be holy. The problem is that they had confused the foundation with the building. They were trying to build holiness into the foundation itself, as if their personal achievement could add to or secure their justification.
When that happens, everything collapses. Because the building is never finished. There is always one more thing to do, one more rule to keep, one more way to prove yourself. The foundation becomes a perpetual project instead of a settled reality. And the person is trapped in a cycle of trying to perfect something that isn’t theirs to perfect.
Why the Foundation Matters
The foundation matters because it is what makes freedom possible. As long as you are still trying to establish or improve your foundation, you are not free. You are bound to the project of self-justification. You are working constantly to prove something, to fix something, to complete something that isn’t yours to complete.
But once the foundation is settled, once you know that you are justified, that your identity is secure, that your standing before God is not dependent on your performance — then you become free. You become free to actually build. To grow. To change. To pursue holiness not as a project of self-improvement but as a response to grace.
Jack articulated this in his own life. He spent decades learning to live on the foundation that he had intellectually believed from his conversion. He spent decades learning how to stop defending himself, stop trying to perfect himself, stop trying to earn God’s love. And as he learned to rest on the foundation, everything else became possible. His ministry became fruitful. His relationships became deeper. His faith became more robust.
Because he was no longer using all his energy to prop up the foundation. He was using his energy to build on it.
How You Build
So how do you actually build on the foundation of justification? Jack said it begins with understanding that the building process is not about becoming someone you’re not. It’s about becoming who you actually are.
You are justified. So you build by learning to live as a justified person. You are loved. So you build by learning to receive that love. You are adopted. So you build by learning what it means to be a beloved son or daughter. You are seated with Christ. So you build by learning to rest in that reality and let it shape your decisions.
The building process involves several elements:
Repentance. Learning to turn away from the lie that you have to justify yourself. Learning to turn away from the projects of self-improvement and self-protection. Learning to turn toward Christ and the reality of your justification.
Faith. Taking a step in a new direction based on who Christ says you are. This is not blind faith. This is faith that rests on the foundation. Faith that says: I am going to act as if this is true. I am going to respond to grace as if grace is actually real. I am going to risk being honest because my identity is secure.
Obedience. Not as a means to justification, but as a response to justification. Not as a way to prove anything, but as an outworking of who you are. Not as a law that governs you, but as a pattern that expresses your actual identity.
Community. Learning to build not in isolation but in the presence of others who believe the gospel about you. Who call you forward into who Christ says you are. Who hold you accountable not to a standard of performance but to a reality of grace.
The Persistent Temptation
The persistent temptation is to start tearing down the foundation in order to rebuild it. To doubt that the foundation is complete. To wonder if you have really been justified. To slip back into the cycle of self-justification.
This happens to every Christian. You have a failure, and you doubt whether you are really justified. You have a persistent temptation, and you wonder if your faith is really real. You have a moment of doubt, and you think you must not actually be converted.
When this happens, the only thing to do is to re-read the foundation. To go back to Romans 3:24. To remind yourself: “All are justified freely by his grace through the redemption that came by Christ Jesus.” Not because of anything you have done. Not dependent on your current performance. But freely. By grace. Through Christ.
The foundation is still there. It hasn’t moved. It hasn’t crumbled. And you are still standing on it.
What Happens When You Really Believe This
When you actually believe that your justification is complete, that the foundation is settled, something shifts. The energy that was going into defending yourself, proving yourself, perfecting yourself, becomes available for something else. For building. For growing. For serving. For loving.
You become someone different. Not through effort. Not through self-improvement. But through the simple act of resting on a settled foundation and letting that rest reshape your entire life.
You become honest. Because you don’t have anything to hide anymore. Your justification is not dependent on your image.
You become generous. Because you don’t have to hoard. Your righteousness is not dependent on what you hold onto.
You become brave. Because you don’t have to be safe. Your identity is not dependent on staying within comfortable boundaries.
You become humble. Because you don’t have to defend yourself. Your standing before God is not on the line.
All of these things — honesty, generosity, bravery, humility — are simply the outworking of actually believing that you are justified. Of actually resting on that foundation. Of actually building your life on top of it.
The Invitation
Jack’s entire life and ministry was an invitation to actually believe this. Not just to think it. But to actually live it. To actually rest on the foundation. To actually build on it.
And the invitation stands for anyone who hears it: Your justification is settled. The foundation is complete. Now, what are you going to build?
Michael A. Graham is the author of Cheer Up! The Life and Ministry of Jack Miller (P&R Publishing) and the founder of The Jack Miller Project (thejackmillerproject.com). He serves as Pastor and Teaching Elder at Boatswain Bay Presbyterian Church in Grand Cayman.
This essay was researched and drafted with the assistance of Claude, Anthropic’s AI assistant, using Claude’s Cowork tools for document preparation.