I Peter 1 Living Differently
If you've recently become a Christian, you may already sense it: something has changed, but the world around you hasn't. Your friends, your habits, your old ways of coping and thinking are all still there, tugging at you — while inside, something new has begun. So how do you actually live this new life, day after day, when the feeling of the moment you believed starts to fade?
The apostle Peter wrote to exactly this kind of person. His first letter went out to new believers scattered across the Roman Empire — ordinary people trying to work out what it meant to follow Jesus in a culture that didn't understand them, and sometimes actively opposed them. His answer, right from chapter 1, comes down to two things: you are now different, and that difference is sustained by obedience to God's word, held onto with endurance.
Let's walk through the chapter together.
1. You Belong to a Different Family Now (1:1–2)
Peter opens by calling his readers "exiles" — strangers, scattered in a land that isn't ultimately their home. That's not a throwaway word. It sets the tone for the whole letter: as a Christian, your primary citizenship has changed. You live in this world, among people who don't yet know Christ, but you no longer belong to the family they're living in.
This matters for a new believer because it explains why things suddenly feel different. Conversations that used to feel normal might start to feel hollow. Habits that used to feel harmless might start to feel wrong. That's not you becoming strange — that's you waking up to a different reality.
2. A Hope That Doesn't Depend on Circumstances (1:3–5)
Peter says believers have been "born again into a living hope" through Christ's resurrection, into an inheritance that can never perish, spoil, or fade — kept safe in heaven, with believers themselves "shielded by God's power."
This is the foundation everything else stands on. Your new life isn't built on a feeling you had once, at a church service or an altar call. It's built on something outside of you — Christ's actual death and resurrection, and an inheritance God himself is guarding. Feelings will rise and fall. This won't.
3. Trials Are Not a Sign You've Done Something Wrong (1:6–9)
Here's where Peter says something new believers especially need to hear: he doesn't promise an easy road. He says they may "for a little while" have to suffer grief in various trials — and that these trials come to prove the genuineness of their faith, the way fire proves gold, so that their faith results in praise, glory and honour when Jesus is revealed.
New Christians sometimes assume that hardship after conversion means something has gone wrong — that real faith should feel constantly triumphant. Peter corrects that immediately. Trials are not evidence that your faith is fake. They're the process that proves it's real, the same way heat doesn't destroy gold, it refines it.
4. This Was Always the Plan (1:10–12)
Peter reminds his readers that even the Old Testament prophets searched intently to understand this salvation, and that even angels long to look into it. In other words: what you've just received isn't some minor footnote in history. It's the very thing prophets longed to see and never fully understood in their lifetime. You are standing on the far side of something enormous.
5. The Turning Point: "Therefore" (1:13–16)
Now Peter turns from what God has done to what that requires of us — and this is where the letter's real emphasis on obedience begins. The ‘therefore’ is important. It links with what he has just written in verses 10-12. The context makes it clear that this obedience is to what God has taught us in his word. This ‘word’ is both what is written in the Old Testament Scriptures and what was taught by the apostles
“Now that you have purified yourselves by obeying the truth . . .” 1 Peter 1:22
“‘the word of the Lord endures forever.’ And this is the word that was preached to you.” 1 Peter 1:25
The apostles’ teaching is now preserved in the New Testament.
He tells them to prepare their minds for action, to be self-controlled, and to set their hope fully on the grace to be given when Jesus returns. Then comes the key phrase: "as obedient children." Not "as people who occasionally obey when it's convenient" — obedient children, people whose default posture is obedience, because that's what it means to belong to this family.
He goes further: don't conform to the evil desires you had before, when you didn't know better. Instead — and this is the heart of the whole chapter — "just as he who called you is holy, so be holy in all you do."
This is the difference Peter is talking about. Not a superficial difference of appearing religious, but a whole-life difference — in what you do, how you think, how you treat people — grounded in the character of the God who called you. And notice: it's rooted in Scripture itself. Peter backs it up by quoting directly from the Old Testament: "Be holy, because I am holy." This isn't Peter's personal opinion. It's the unchanging word of God, and obedience to that word — not to trends, not to culture, not to how you feel on a given day — is the standard.
6. Obedience Held with Reverence (1:17)
Peter adds a sober note: God, the Father you now call on, judges impartially according to what each person has done — so live out your time here with reverent fear. This is yet another reminder that a Christian’s life will still be judged even though we have been accepted into God’s family because we are following the Lord Jesus. This isn't meant to frighten you away from God; it's meant to keep you serious about him. A child who deeply loves a parent doesn't want to disappoint them. That's the posture Peter is describing — not anxious dread, but careful, loving respect.
7. What It Cost (1:18–21)
Peter reminds them why obedience matters so much: they weren't redeemed with silver or gold, but with the precious blood or death of Christ, a lamb without blemish or defect. Jesus’ crucifixion was the ultimate sacrifice for sin that all the Old Testament sacrifices symbolised. Obviously the death of a lamb cannot forgive our sin against God, they all looked forward to Christ’s ultimate and final sacrifice where he became the substitute for our sin. This is important for a new Christian to hold onto. Obedience isn't how you earn your standing with God — Christ already paid an immeasurable price to secure it. Obedience is how you live in that standing, out of gratitude, not out of fear that you might lose what was already freely given.
8. Love That Endures (1:22–23)
Having purified themselves by obeying the truth, Peter says, believers are now to love one another deeply, from the heart. Joining a new family is not a theoretical idea, it is eminently practical. All christians need to become deeply involved in a local church where the Scriptures and taught and people are trying to obey them by sharing the faith with others and caring for each other.
He then adds a striking phrase: they have been born again, not of perishable seed but of imperishable, "through the living and enduring word of God."
Notice that phrase again: the enduring word of God. Your new birth wasn't produced by a passing feeling or an emotional high. It was produced by God's word — which means the same word that gave you life is exactly what will sustain that life going forward. This is Peter's answer to the question every new believer eventually asks: how do I keep going when the initial excitement fades? You keep going the same way you started — by staying rooted in God's word, and obeying it, day after day, whether or not it feels dramatic.9. Everything else fades — this doesn’t.
Peter closes the chapter quoting Isaiah:
“All people are like grass, and their glory like the flowers of the field — the grass withers and the flowers fall, but the word of the Lord endures forever.” 1 Peter 1:24–25
This is the anchor for "sticking at it." Every other foundation you might be tempted to build your Christian life on — feelings, circumstances, other people's approval, your own willpower — will wither, the way grass withers. God's word won't. That's why it, and obedience to it, is the one foundation strong enough to build a whole life on.
Putting It Together
If you take one thing from 1 Peter 1 as a new Christian, let it be this: the difference in your life is real, and it is not maintained by intensity of feeling — it is maintained by steady obedience to God's word, held onto for the long haul.
Your hope rests on what Christ has already done (v. 3–5), not on your emotional state.
Trials don't disprove your faith — they refine it (v. 6–9).
Holiness — visible, whole-life difference — flows from obedience to what God has said, not what culture says (v. 14–16).
That obedience is possible because of what it cost Christ, not because you're earning anything (v. 18–19).
And the thing that will keep you going, when feelings fade and life gets hard, is the same thing that started this new life in the first place: God's enduring word (v. 23–25).
So when the excitement of the early days settles down — and it will — don't panic, and don't look for a new spiritual high to chase. Go back to the same place you started: God's word, obeyed steadily, one day at a time. That's not a lesser kind of faith. According to Peter, it's the only kind that lasts.
"The grass withers and the flowers fall, but the word of the Lord endures forever." 1 Peter 1:24–25
Parallels between Psalm 101 and 1 Peter 1
This teaching that being one of God’s people implies a total commitment to following the Lord and what he teaches is also seen in a psalm of David, Psalm 101.
1 Peter 1 doesn't quote Psalm 101 directly but it does quote Leviticus which gives a common theme with the psalm:
“Be holy because I am holy.” 1 Peter 1:16 and Leviticus 11:45
The two passages share a strong thematic resonance — both are about what a resolve toward personal holiness actually looks like in practice. Here's how they connect:
1. Both frame holiness as a resolve, not just a feeling
Psalm 101 is David's personal vow:
"I will sing of your love and justice... I will be careful to lead a blameless life... I will walk in my house with blameless heart . . .” Psalm 101:1-2
It's structured almost entirely around deliberate, repeated "I will" statements — a king committing himself to live a holy life. He does this because he knows that one day he will meet with God:
“… when will you come to me?” Psalm 101:2
1 Peter 1:13–15 does something similar in a different voice: "prepare your minds for action... as obedient children, do not conform... be holy in all you do." Peter isn't describing an emotional state; like David, he's calling for a determined, ongoing commitment that will need to be renewed daily.
2. Both insist holiness covers the whole of life, not just public religion
“I will conduct the affairs of my house with a blameless heart.” Psalm 101:2
David specifically vows to walk with integrity "in my house" — meaning his private, domestic life, not just his public conduct as king. That's a striking detail: holiness has to hold up where no one else is watching.
Peter's phrase "in all you do" (or in the KJV, "in all manner of conversation") makes the identical move — holiness isn't confined to formal worship, it's meant to touch every corner of ordinary life, private and public alike.
3. Both reject conformity to former, corrupt patterns
David vows not to focus on anything unclean or improper, to hate the deeds of godless people, and to keep deceitful people far from him.
“I will not look with approval on anything that is vile. I hate what faithless people do; I will have no part in it.The perverse of heart shall be far from me; I will have nothing to do with what is evil. Whoever slanders their neighbour in secret, I will put to silence; whoever has haughty eyes and a proud heart, I will not tolerate.”
Peter tells his readers:
“Do not to conform to the evil desires you had when you lived in ignorance" 1 Peter 1:14
Both texts assume holiness requires an active, ongoing rejection of old patterns and old company — not passive drifting.
4. Both connect holiness to impartial justice/judgment
Psalm 101 opens by pairing "love and justice" as the two things David will sing about, and much of the psalm is about David's resolve to deal with wickedness without favouritism — silencing slanderers, refusing to tolerate arrogance or deceit "day after day," regardless of who they are.
1 Peter 1:17 makes a very similar move: believers
“. . . call on a Father who judges each person's work impartially"
That impartial judgment is precisely why reverent fear should shape how Christian’s live. In both texts, holiness and justice aren't separate ideas; the character of the one who judges without partiality is what grounds the call to personal integrity.
5. Both are about who belongs in God's household/city
Psalm 101 closes by describing who may or may not remain in David's household and "the city of the Lord" — those who practise deceit or lies will not remain; David's eyes are on "the faithful of the land" to dwell with him.
1 Peter 1 builds toward the same household imagery, even if it fully blossoms a bit later in the letter (2:5, "living stones... a spiritual house"): believers are "obedient children" (1:14), born again into a family, purified so they can "love one another deeply" (1:22). Both texts picture a commitment to holiness as the entrance requirement, in effect, for genuine belonging in God's household.
One important difference worth naming:
Psalm 101 is a king's personal vow of self-discipline — David resolving what he will do. 1 Peter grounds the same call not in self-resolve but in identity already given:
“. . . as he who called you is holy, so be holy" 1 Peter 1:15
This command follows from what God has already done (1:3–12), not from human willpower alone. Peter's obedience flows out of grace received; David's psalm is closer to a ruler's personal oath. It's a helpful contrast for a new believer: the Old Testament pattern shows what resolved holiness looks like in practice, but Peter shows why it's now even possible — because it's a response to grace, not a bid to earn God’s favour.
Ernest was a Prince in Germany during time of great upheaval. Countries had been torn apart after the Protestant Reformation. Ernest was in the middle of the disastrous and bloody 30 years war (1616-1648) when European leaders were trying to gain territorial advances. More than half the population of Germany were killed during this war. Ernest tried to rebuild Germany establishing churches, hospitals, courts and other public institutions. Psalm 101 was foundational to his thinking. If some public official had done something wrong, the Prince would send them a copy of Psalm 101. This became a catch-phrase in the country, to ‘receive the prince’s psalm to read. This psalm is a commitment to live an honest God-centred life which will depend on how we determine to live.
BVP
Christchurch Baldock is a Bible teaching gospel centred local church. More details can be found on its website. It meets every Sunday morning at 10.30 am in Knights Templar School, Baldock
Bernard can be contacted at berniepalmer1@sky.com
