Romans 12: A Living Sacrifice for the Living God

Introduction

"What does it really mean to be a Christian?" Thomas Friesen opens his message at FEG Bern with this question. Many would answer: being a good person, behaving well, supporting others. That is part of it. But all around us, people from every religious background, and even people who believe in nothing supernatural, live exemplary lives: honest citizens, upright people, pleasant companions.

If a good life is not enough to define the Christian life, what does characterize it? The preacher believes the difference is immense. He returns to the image given at the start of the service: seeing how the fragments of your life fit together into a whole that is great, beautiful and coherent. That is part of what it means to be a Christian, and it means living under a different authority.

This is what Paul describes in Romans 12:1-2. Thomas Friesen sees three things in it: the essence of the Christian life, the transformation within the Christian life, and the strength for the Christian life.

Outline of the message

1. "Therefore": the life that flows from the Gospel

The text: "Therefore I urge you, brothers, by the mercies of God, to present your bodies a living sacrifice, holy, acceptable to God, which is your spiritual service. Don't be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is the good, well-pleasing, and perfect will of God."
Romans 12 is a consequence. For eleven chapters, Paul shows what God has done: he explains what the Gospel is.
Then comes this word: "therefore". If you have understood and believed everything that comes before, here is what your life will look like. The last five chapters of the letter show what we owe and what we are free to be.

2. The essence: a living sacrifice

Paul uses a surprising word. A sacrifice is killed: it is dead, it disappears. Speaking of a "living sacrifice" is almost a contradiction in terms, and this paradox wants to teach us something.
In Paul's day, a sacrifice was a one-time act: you kill the animal, lay it on the altar, it is burned and that settles it. As one preacher said, the living sacrifice has the annoying habit of always climbing back down off the altar. The Christian life is not something you finish once and for all: it is a way of life, a process that goes on.
But as in a sacrifice, something has to die: the thought that I belong to myself, that I am the supreme authority over my life, that I can decide alone what is good and right for me.
"And it takes courage to say that in 2026, doesn't it?" This does not mean denying yourself to the point of losing your personality. It means recognizing: I do not have the last word over my life.

3. The story of a young woman who thought she had given everything

The American preacher John Gerstner tells the story of a young woman he knew. In 1930, at 15 or 16, deeply moved by a message at a Christian conference, she decides to dedicate her whole life to God. Her heart beats for Asia.
Missionary organizations set two conditions: she must be trained, and, for cultural reasons, she must not go alone. She needs a husband. She prays: "God, I give you my whole life. My security, a comfortable life, I don't care. I will go to Asia. There is just one thing I need from you: give me a husband."
She earns a first degree in Bible and theology, then a master's in intercultural studies. No fiancé, nobody on the horizon. The night before her master's degree is awarded, she sits in her dorm room, angry: "I invested everything, my whole life. Why doesn't this door open?"
That night, she realizes: "Actually, I have been lying to myself all this time." She had never let go of her vision of a heroic and honorable life. She had decided what her life should look like, then behaved in a way that would oblige God to give her what she wanted.
She was not unhappy because she had handed her life over to God, but because she had never been able to let it go. That night, for the first time, she truly acknowledged an authority above her: "God, you know where I should go. You know what my life should look like. Not me: you know what is good for me."
She had invested a third of her life to go on mission, sacrificed all kinds of things, without ever giving up control. At the end of his story, John Gerstner asks: "Have you ever handed over your life in this way?" Thomas Friesen asks his congregation the same question.

4. Everyone sacrifices to something

This message goes against one of the deepest convictions of our culture. A theologian said that no culture in history has been so opposed to the essence of the Christian life, because one of its supreme values is self-determination. The preacher sums it up like this: "I know better than anyone what is good for me. I want to be the captain of my own ship, and if I have to, I will steer it into the abyss myself."
The preacher cites an article from a medical journal titled "My Last Will Be Done." It was about Exit and assisted suicide: remaining in control until the last moment, deciding when, how and where to leave.
The Christian life is the opposite: I choose to submit to something greater. If I say "I am a Christian, but I follow God's Word only where I agree," I have not handed over authority. We can debate interpretation, but the Christian recognizes that God's Word has more to say about his life than he does himself.
Another trap: "I will be obedient if... if I finally understand, if I get this job, if my spouse finally changes." What comes after that "if" is the thing you are really living as a sacrifice for.
And if you are not sure about your position on the Christian faith, you may say: "I prefer to stay free, with nothing above me." That is understandable. But let us not fool ourselves: every human being is a living sacrifice for something or someone.
The writer David Foster Wallace, who did not believe in God, said it in a speech to students: "Everybody worships something." The only choice we have is what we worship. And almost everything else you worship will eat you alive. If you worship your work, it will consume your life, and you may sacrifice your family to it.
Even the person who says "I give my heart to nothing and no one" sacrifices himself on the altar of his own independence, and risks dying alone. Paul calls us to be a living sacrifice for the living God, not a dead sacrifice for a dead thing that will be gone in a few years.

5. The transformation: the body, the mind and the metamorphosis

In verse 1, Paul speaks of the body; in verse 2, of the renewing of the mind. The body and the inner life must both come under God's rule.
It is not just a small spiritual part of you, your quiet time and your Sunday morning. It is your whole life: how you go to work, how you spend time with your friends, how you use your free time. "God does not want something from you. He wants you."
Concretely, it means applying to your whole life what the first eleven chapters of Romans say. What does "I am saved by grace, without any merit" mean for my work, my family, my friendships, my future, my past, my singleness, my marriage?
Paul does not say "change yourselves," like an order to carry out, as if you could rebuild yourself the way you renovate a house by sheer effort: knock down a few walls, put in new windows, a coat of paint. He says: "Be transformed" from the inside. It is the work of God's Spirit in you.
Religion says: "Adjust your behavior, be moral, keep the commandments, and God will bless you." The Christian life is the complete transformation of your desires, your thinking, who you are.
The Greek word Paul uses gave us our word "metamorphosis": the caterpillar shuts itself in a cocoon and comes out a butterfly.
Thomas Friesen is no expert on butterflies, but one of his favorite childhood books was The Very Hungry Caterpillar, the caterpillar that makes holes. In its cocoon, the caterpillar receives no instruction manual, does no flying exercises, does not train, does not force anything.
It releases enzymes, turns into a kind of soup, then the cells, coded for this, reassemble with eyes, antennae, wings. The caterpillar gives up what it was and becomes something far more beautiful.
This is the complete transformation that God's Spirit wants to work in our lives.

6. The strength: God's mercies at the cross

"I cannot turn myself into soup and reassemble myself." Where do we find the strength? Paul answers from the very start of the chapter: "by the mercies of God." Look at God's mercy.
The word "present" describes a voluntary act, one that nobody imposes on you. The transformation begins when we freely give our lives.
Jesus Christ is the greatest example of voluntary giving in history: "No one takes it away from me, but I lay it down by myself" (John 10:18). At Gethsemane, he gets a foretaste of the horror awaiting him at the cross, the wrath of God, the punishment we deserved. He is crushed, his sweat becomes like blood. He could have said no. He said: "I want to walk this road."
Why? Out of love for you. He accepted to be a dead sacrifice, broken, to descend into the deepest darkness, so that we could be living sacrifices. "He lets go of his life so that you may receive yours." He falls into the utmost darkness so that we, in our pain, never fall lower than the hand of God. What would be more right than letting go of your life for him?
Without this, you will remain anxious, angry, nervous, like the young woman in the story. She was able to let go when she understood that God is infinitely wise and infinitely loving.
How can we know this when such hard things happen to us? I look at the cross. There I see God's absolute justice, who judges sin, and his absolute love, since he himself takes the just punishment upon himself. When I understand that there is no more condemnation and that I am fully accepted by God, I can be freed from anger, fear and the need to control everything.
This is the decisive difference between a Christian life and one that is not: the strength, the joy and the freedom of being accepted, justified, sanctified and loved by the almighty God for eternity, not for what I have accomplished, but for what he has accomplished.

7. A reasonable act of worship

Paul calls this living sacrifice a "reasonable service": in Greek logikos, logical. At first glance, it is not logical at all.
But when we see that he gave himself entirely to us, the most logical reaction is to say to him: "I want to give myself entirely to you." Nobody else has done for you what Jesus Christ has done.
God is infinitely wiser than I am, like a father compared with a three-year-old child. He loves so much that he gave his only Son for me while I still hated him. So I begin to truly hand myself over to him, because he knows better than I do what is good for my life.
"Even when the days grow dark, even if this body breaks down, I can know that I am loved for eternity by the wisest, the greatest God of all time." If Jesus Christ has given you everything, is it not simply logical to give him everything?
The message ends with a prayer: "Jesus, you held nothing back, not your body, not your thoughts, not a single piece. Help us to recognize at the cross how infinitely wise and infinitely loving you are."

Key takeaways

A good life is not enough to define the Christian life: being a Christian means living under God's authority and no longer under your own.
The living sacrifice is not a one-time act but a way of life: every day, the thought "I belong to myself" has to die.
Everyone sacrifices to something. The only question is to what, and almost everything else ends up devouring us.
God does not ask for a mere touch-up of behavior. He wants a complete transformation, from the inside, by his Spirit.
The strength to surrender comes from the cross: the one who gave everything for you is infinitely wise and infinitely loving.

Personal application

In which area of your life do you still remain the supreme authority, the one who has the last word?
What "if" do you attach to your obedience: "I will obey you if I understand, if I get this position, if my spouse changes"?
Like the young woman in the story, do you have a vision for your life that you ask God to bless without ever handing it over to him?
To what, or to whom, are you sacrificing your time, your family or your health today?
What difference does it make for you this week to look at the cross when hard things happen to you?

Verses cited

Frequently asked questions

What does "present your bodies as a living sacrifice" mean in Romans 12:1?

For Thomas Friesen, the expression is deliberately paradoxical. As in a sacrifice, something has to die: the thought that you belong to yourself and that you are the supreme authority over your life. But this sacrifice is living: it is not a one-time act, it is a way of life that continues every day, with your body and your mind.

What is the difference between a Christian life and a merely moral life?

Many people, believers or not, lead an honest and exemplary life. According to the preacher, the difference lies elsewhere: the Christian lives under a different authority. He does not just adjust his behavior, he lets God's Spirit transform him from the inside, and he receives the strength for it by looking at God's mercies.

Why does Paul speak of a reasonable act of worship?

The Greek word is logikos, logical. Thomas Friesen explains that, since Jesus Christ gave himself entirely for us, the most logical reaction is to give him our whole life. He knows better than we do what is good for our life, like a father compared with a three-year-old child.