The moon has no light of its own. Not one photon. That bright disc we see on a clear night is not moonlight at all. It is sunlight, bouncing off a dusty surface a quarter million miles away. Moonlight is just a reflection. And so are we.
As disciples of Christ, we reflect Him. In how we walk. How we carry ourselves. How we treat others. All of it reflects Jesus, or fails to. In Ephesians, Paul lays out three walks, and underneath all of them is one truth: we were made to reflect. Made to turn our face toward the light and give it off.
Walk in Love
The passage opens with a set of counterweights. Do not steal; instead, work, so you have something to share with someone in need. Do not trash talk; instead, encourage, so your words deliver grace. Do not be malicious; instead, forgive, as God forgave you. Hands, mouth, heart. The whole person, turned inside out, each part for the sake of someone else.
Right in the middle of them, in verse 30, is a line easy to miss. Do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption. The word for grieve is lupeō, the same word used of Jesus in Gethsemane, “my soul is very sorrowful, even to death,” and of Peter, grieved when Jesus asked him a third time, “do you love me?” Real sorrow. Not annoyance, not disappointment. Sadness. The Holy Spirit feels, and our conduct can make Him sad. A seal in the ancient world was an ownership mark, wax stamped with a signet ring. We are owned. We are guarded. We are sealed for the day of redemption. So when Paul says do not grieve Him, he is not saying do not break a rule. He is saying do not sadden the Person who marked you as His own and is keeping you until you come home.
Then verse 1. Therefore be imitators of God. The word is mimētēs, where we get “mimic,” but it carried more weight than mimic does for us. Paul uses it for the deepest kind of formation, being shaped by the master, not merely copying him. And imitating God would be impossible except for the next phrase. As beloved children. Children imitate their parents without trying, because they come from them. The resemblance is effortless. That is what keeps this from becoming a checklist. We are not trying to look like Him. We were made to look like Him, and to walk in love, as Christ loved us and gave Himself up for us, a fragrant offering. Paul says elsewhere that we are the aroma of Christ. Not that we produce the aroma. We are it. Flowers do not strain to be fragrant. They just are.
Discussion
- “Do not grieve the Holy Spirit.” Paul says the Spirit feels real sorrow, the same word used of Jesus in Gethsemane. How does it change your conduct to picture saddening a Person, not breaking a rule?
- We were made to resemble Him the way children resemble their parents, effortlessly, not by straining. Where does looking like Christ still feel like strain for you?
Key Takeaways
- We imitate God with our hands, our mouth, and our heart. The whole person, inside out, each part for someone else. Our redeemed nature does it because we carry His seal.
- We were made to look like Him, not straining to. A fragrant offering. For God’s beloved children, the resemblance is meant to be effortless.
Walk in Light
Before Paul names the light we walk in, he names the dark we walk from. He could have just said be holy. He did not. He gets specific, naming the darkness so we cannot pretend it is not there. Three vices of the mind: sexual immorality, impurity, covetousness. Three angles on one appetite, the craving that always wants more, each running on the same fuel of idolatry. Three vices of the mouth: filthiness, foolish talk, crude joking. Corrosive, normalizing what stings. Paul says these must not even be named among you. Not just do not do them, do not even make them a topic. Why? Because they do not fit who you are now. Like a tuxedo at a barbecue, they are out of place. Instead, thankfulness, the counterweight to a carnal mind and a filthy mouth.
Then Paul gets serious. Those defined by these things have no inheritance in the kingdom. The grief of the Spirit from chapter 4 becomes the wrath of God on the sons of disobedience. But hear what Paul already said in chapter 2: we all once were sons of disobedience. Every one of us. He is not pointing across the aisle. He is saying, do not drift back. Do not become partners, shareholders, in darkness. You have a different inheritance.
Then verse 8, the pivot. At one time you were darkness. Now you are light in the Lord. Not you are in the light. You are light. Identity. So walk as children of light, walk like what you already are. The fruit of light is good and right and true. Hold that next to the darkness he just named; the contrast tells you which tree you came from. And notice how light works. It exposes just by being lit. When light enters a room, what was hidden is hidden no more. Which builds to the crescendo: Awake, O sleeper, arise from the dead, and Christ will shine on you. Wake up. Get up. And reflect Him. That is what we do when we walk in the light as He is in the light. We reflect His light back into the world.
Discussion
- Paul says the old darkness should not even be “named among you,” like a tuxedo at a barbecue, out of place. What have you made normal that no longer fits who you are in Christ?
- Verse 8 does not say you are in the light, it says you are light, and light exposes just by being lit. Where might simply being what you are already be shining, without you forcing it?
Key Takeaways
- You are light in Him, so walk as you are. If that feels hard to believe, check your ID card. The fruit of light, good and right and true, tells you which tree you came from.
- Christ shines on us, and we reflect Him into the world. Light exposes the dark simply by being lit. This is what we were made for.
Pursue God’s Will
Look carefully how you walk, Paul says. Not careless, careful, like crossing a busy road. Do not stare at your phone. Be alert. Walk wisely, not foolishly, making the best use of the time. The word for time here is not clock time. It is opportunity. The fleeting chances. Paul says redeem it, buy it back. The world sells its time to other things every day; wisdom buys back the moments while it can, because the days are evil and time is short.
Do not be foolish, he says, do not be drunk, do not waste your life. The word he uses for debauchery is the same word Luke uses for the prodigal son. Aimless, scattered, spending what was meant for purpose on empty pursuits. That is not us anymore. Instead, understand what the will of the Lord is. Pursue it, grasp it, know it, live in it. This is where the whole lesson lands. Walking in love, walking in light, walking wisely, all of it bends toward one thing: understanding what the Lord wills, and then doing it.
Do not be drunk with wine, be filled with the Spirit. Both are about being filled, being controlled. The question is not whether you will be filled. The question is, by what? And what does a Spirit-filled life look like? Praise and thanksgiving for everything, even the hard things. And submitting to one another out of reverence for Christ. All of us, to each other, in every direction. Not a hierarchy. Voluntary submission, out of awe for Him. That is what Spirit-filled people do.
Discussion
- Paul says you will be filled by something, wine or the Spirit; the only question is by what. Look at this past week honestly. What has been filling you?
- Paul says wisdom buys back the fleeting moments, spending them on the Lord’s will instead of empty things (5:16-17). Where is one ordinary hour or conversation this week you could give back to Him, instead of letting it slip?
Key Takeaways
- Walking wisely means being on the lookout, and pursuing His will. Make the most of every opportunity, buying back the moments. Study His will, understand it, then do it.
- Be filled. The question is not whether, but by what. Filled with the Spirit, with praise and thankfulness for everything. This is what Spirit-filled people do.
Something to Sit With
Three walks. One life. Walk in love. Walk in light. Walk wisely, in pursuit of God’s will. Underneath each is the truth we started with. We are reflections. Made to reflect the Son. Jesus. The moon does not try to shine. It just reflects what it faces. And so it is with us.
A few things to quietly ask yourself.
- Does my walk reflect His love? Maybe not on Sunday in front of a group, but on Tuesday, in front of the people closest to me?
- What do I still keep hidden on my far side? Am I ready to walk in the light of the near side?
- What is filling my life right now? My mind, my mouth, my time.
- Will I choose to discover and pursue His will?
Turn your face toward the Son, and let His light on your walk reflect into someone else’s world. Each of us was made for this.
Frequently Asked Questions
How can I tell if I’m grieving the Holy Spirit?
Paul doesn’t leave it vague. He names it. Right around the warning he lists bitterness, anger, slander, words that tear down instead of building up (4:29, 31). That is what grieving the Spirit looks like: unkindness where God put you to give grace. The word for grieve means real sorrow, the same word used of Jesus in Gethsemane. He is a Person. He feels. But hear the rest of the verse before you spiral. You were “sealed for the day of redemption” (4:30). You can sadden Him. You cannot lose Him. So the sign is not a knot in your stomach. It is the sharp word, the held grudge, the thing you already know isn’t love. When you see it, you don’t need a diagnosis. Turn back and be kind (4:32).
What does it mean to be an imitator of God?
The word is mimētēs, where we get “mimic,” but Paul means more than copying (5:1). He means being shaped by God the way a child is shaped by a parent. And that is the phrase that makes it possible: “as beloved children.” Children imitate their parents without trying. The resemblance comes from where they came from. So this is not a performance you put on. You are not straining to look divine. You are becoming what you already are, God’s child, and it shows. How? “Walk in love, as Christ loved us and gave himself up for us” (5:2). That is the imitation. Not power, not perfection. Love that gives itself away. You imitate God most when you love someone the way He loved you.
What does it mean that I’m not just in the light, but that I am light?
Read verse 8 slowly. Paul does not say you were in the dark and now you are in the light. He says “at one time you were darkness, but now you are light in the Lord” (5:8). That is identity, not location. It changed at the root. So walking in the light is not you generating something. It is you being what you already are. And light works by exposing, just by being lit. When it enters a room, what was hidden is hidden no more. You don’t have to force that. Turn toward Christ and the light comes off you the way it comes off the moon. Borrowed, reflected, real. If it feels hard to believe you are light, check your ID card. The fruit, “all that is good and right and true” (5:9), tells you which tree you came from.
Why does Paul say some sins should not even be “named among” us?
Because they no longer fit who you are. Paul lists them: sexual immorality, impurity, greed, filthy talk, crude joking (5:3-4). Then he says these “must not even be named among you.” Not just don’t do them. Don’t make them your normal, your running joke, your comfortable topic. Why so strict? Not because God is squeamish. Because they are out of place on you, like a tuxedo at a barbecue. You are set apart now. And the counterweight he gives is not white-knuckle avoidance. It is thanksgiving (5:4). A grateful heart has less room for the craving that always wants more. So this is less about a list of banned words and more about a life so full of gratitude that the old appetites lose their grip.
What does it mean to be filled with the Spirit?
Paul sets it against being drunk: “do not get drunk with wine… but be filled with the Spirit” (5:18). Both are about being filled, being controlled. So the question is not whether you will be filled by something. You will. The question is by what. To be filled with the Spirit is to live under His influence instead of your own appetites, and Paul writes it as ongoing, not a one-time zap. Keep being filled. And he tells you right there what it looks like: singing, thankfulness for everything, submitting to one another out of reverence for Christ (5:19-21). Not strange or showy. A life of praise, gratitude, and mutual humility. If you want to know whether you are filled, look less for goosebumps and more for those.
How do I make the best use of the time?
Paul says “look carefully then how you walk… making the best use of the time, because the days are evil” (5:15-16). The word for time is not clock time. It is opportunity, the fleeting chance. And “make the best use of” means buy it back, redeem it. So this is not about cramming your calendar or being busier. The world spends its time on empty things every day. Wisdom buys the moments back for something that lasts. Practically? Ask what the Lord’s will is in the hour you actually have (5:17), then do that. The kind word now. The obedience now. The person in front of you now. You redeem the time not by doing more, but by giving the moment you’re in to Him.
This lesson is part of the Made for This series.
Scripture quotations are from the ESV Bible (The Holy Bible, English Standard Version), copyright 2001 by Crossway.