Sermon On How To Serve God

Living Sacrifices, Faithful Servants: What God Actually Wants From You

How do you think about your relationship with God when Sunday is over? When the singing stops and the parking lot empties and Monday morning arrives with all of its pressure and noise, do you feel like your service to God is something that happens here, in this room, during these hours? Do you feel like worship is a category of life, something you do for a while and then set aside until next week? And if someone asked you plainly, how do you serve God, what would you say? Would you point to a ministry role, a committee, a volunteer slot? Or would you honestly wonder whether you are serving him at all?

These are not questions meant to produce guilt. They are questions the apostle Paul was already asking the church in Rome, and the answers he gives in Romans 12 are among the most searching and practical words in the entire New Testament. If you want to understand what it means to serve God, not as a religious duty performed on certain days but as a whole way of living, this passage is where you need to stay for a while.

Open your Bible to Romans 12, beginning at verse 1. Paul writes, "Therefore, brothers and sisters, in view of the mercies of God, I urge you to present your bodies as a living sacrifice, holy and pleasing to God; this is your true worship. Do not be conformed to this age, but be transformed by the renewing of your mind, so that you may discern what is the good, pleasing, and perfect will of God."

He continues in verse 3, "For by the grace given to me, I tell everyone among you not to think of himself more highly than he should think. Instead, think sensibly, as God has distributed a measure of faith to each one. Now as we have many parts in one body, and all the parts do not have the same function, in the same way we who are many are one body in Christ and individually members of one another. According to the grace given to us, we have different gifts: if prophecy, use it according to the proportion of one's faith; if service, use it in service; if teaching, in teaching; if exhorting, in exhortation; if giving, with generosity; if leading, with diligence; if showing mercy, with cheerfulness."

That is the text. Now let us walk through it carefully, because what Paul is describing here is not a program for church volunteers. He is describing the entire shape of a life given to God.

The Foundation Of Service: Mercy Received

Notice that one word at the beginning of verse 1. Paul says, "Therefore." That word is doing enormous work. It is pointing backward across eleven chapters of the most sustained theological argument in the New Testament, chapters about human sinfulness, divine wrath, justification by faith alone, the grace of God poured out through Jesus Christ, the security of those who are in him, and the sovereign mercy of God toward people who deserved none of it. Paul has spent eleven chapters telling you what God has done for you in Christ. Now he says, therefore, in view of all of that mercy, here is how you respond.

This is the governing logic of the whole passage. You do not serve God in order to earn his favor. You serve God because you have already received his favor, freely, through the death and resurrection of Jesus Christ. The cross is not the reward for your faithful service. The cross is the reason you serve at all. If you have trusted Jesus Christ as your Lord and Savior, then everything you have, your body, your mind, your gifts, your days, all of it has been purchased by his blood and given back to you as a stewardship. That changes everything about how you approach the question of serving God.

So when Paul urges you to present your body as a living sacrifice, he is not asking you to earn something. He is asking you to respond to something already done. The sacrifice has already been made. Christ offered himself once for all. What you are offering is not a payment. It is a response. It is the grateful yes of a person who has been loved beyond what they deserved.

The Shape Of Service: Whole-Life Worship

Now look at what Paul actually calls this. He says presenting your body as a living sacrifice is your true worship. The Greek word behind that phrase, the word sometimes translated reasonable service or spiritual worship, carries the idea of rational, fitting, appropriate devotion. Paul is saying that given who God is and what he has done, giving him your whole life is simply the appropriate response. It makes sense. It fits.

And notice that Paul says your body. Not just your soul, not just your Sunday morning, not just your spiritual feelings. Your body. Your schedule. Your hands. Your voice. Your work. Your relationships. Your decisions made at ten o'clock on a Tuesday morning. All of it. Serving God is not a compartment of your life. It is the orientation of your whole life.

This means that the question, how do I serve God, is not primarily answered by finding the right ministry slot. It is answered by asking, am I giving my whole self to him? Am I holding anything back? Because a living sacrifice, unlike the animal sacrifices of the old covenant, can crawl off the altar. And if we are honest, we do that all the time. We offer God our Sunday mornings and keep the rest for ourselves. Paul says that is not what true worship looks like.

The Transformation Required: A Renewed Mind

Verse 2 tells us how this kind of whole-life service becomes possible. Paul says do not be conformed to this age, but be transformed by the renewing of your mind.

The word conformed here carries the image of something being pressed into a mold from the outside. The world around you is constantly applying pressure, shaping your values, your assumptions, your definition of success, your understanding of what a good life looks like. That pressure is relentless. It comes through what you watch, what you read, what you hear, what your culture tells you matters. And if you are not actively being transformed in a different direction, you will be conformed in that one.

The transformation Paul describes is not self-improvement. It is not trying harder or developing better habits. The word transformed is the same word used to describe what happened to Jesus on the mountain of transfiguration. It is a change that works from the inside out, and Paul locates it in the renewing of your mind. This is why the word of God matters so much. This is why you cannot sustain faithful service to God on the fumes of a Sunday sermon alone. Your mind needs to be regularly shaped by Scripture, by prayer, by the community of believers, by honest self-examination in the light of God's truth. When your mind is being renewed, you begin to discern what is good and pleasing and perfect in God's sight. You start to see your life differently. You start to see your gifts, your time, your relationships as instruments of worship rather than possessions to manage.

The Humility Required: Thinking Sensibly About Yourself

Paul moves in verse 3 to something that might seem like a detour but is actually central to everything. He says do not think of yourself more highly than you should think. Think sensibly.

Pride is the great enemy of faithful service. When we overestimate ourselves, we either refuse to serve in ways that seem beneath us, or we serve in ways that are really about our own recognition rather than God's glory. Paul is not calling you to think poorly of yourself. He is calling you to think accurately. God has given you a measure of faith. He has given you gifts. Think honestly about what they are and are not.

And then Paul makes a point that every believer needs to hear. He says we are one body in Christ, and we are individually members of one another. Your gifts are not for your own advancement. They are for the body. When you use your gift, you are serving someone else. When someone else uses their gift, they are serving you. The body functions when every part does its work. The body suffers when parts are idle or when parts try to be something they were not designed to be.

The Gifts Given: Use What God Has Placed In You

Paul then names a range of gifts: prophecy, service, teaching, exhortation, giving, leading, showing mercy. You may look at that list and feel uncertain about where you fit. That uncertainty is worth bringing to God in prayer and to your brothers and sisters in this congregation. But notice what Paul does not say. He does not say wait until you feel ready. He does not say serve only when conditions are ideal. He says if you have been given a gift, use it. Use it faithfully, use it generously, use it with diligence and cheerfulness.

The person with the gift of service is not told to wait for a more prominent opportunity. The person with the gift of mercy is not told to hold back until they feel emotionally prepared. The one who gives is told to give with generosity. The one who leads is told to lead with diligence. Whatever God has placed in your hands, he is asking you to open those hands and use it for the good of the body and the glory of his name.

The Invitation: Give Yourself To Him

So here is where we land. Serving God is not a program you sign up for. It is a life you give over. It begins with receiving the mercy of God through faith in Jesus Christ, and if you have never done that, that is the first and most important step you can take today. Everything else flows from that. You cannot serve God faithfully from the outside. You serve him from the inside, as someone who has been transformed by his grace.

And if you are already a believer, the question before you is simply this. Is there anything you are withholding from him? Is there a part of your life still off the altar? Is there a gift you have been given that you have not yet put to use for the body? Is your mind being shaped by his word, or is it being quietly conformed to everything around you?

Paul's word to you today is not a burden. It is a liberation. You were made for this. You were redeemed for this. Give yourself to him, all of you, and discover that this is what you were created to do.

Let us pray. Father, we thank you for the mercy that makes all of this possible. We thank you that you did not ask us to earn our way to you but that you came to us in Christ and paid what we could not pay. We ask you now to do what only you can do: renew our minds, humble our hearts, show us our gifts, and help us to lay our whole lives before you as living sacrifices. May our service to you begin not when we walk into this building but the moment we walk out of it. In the name of Jesus Christ, amen.

Sources Consulted

Moo, Douglas J. The Letter to the Romans. New International Commentary on the New Testament. Eerdmans, 2018.

Schreiner, Thomas R. Romans. Baker Exegetical Commentary on the New Testament. Baker Academic, 1998.

Cranfield, C. E. B. A Critical and Exegetical Commentary on the Epistle to the Romans. International Critical Commentary. T and T Clark, 1979.

Stott, John R. W. Romans: God's Good News for the World. The Bible Speaks Today. InterVarsity Press, 1994.

The Christian Standard Bible. Holman Bible Publishers, 2017.