God Did Not Change. Peter Did.
Part 5 of 6 in the series: No Walls. No Masks. No Favourites.
By Rev. Promise Ave | promiseave.org
If you read the story of Acts 10 quickly, you could easily walk away thinking that God did something new that day in Caesarea. A vision descended from heaven while Peter was praying on a rooftop in Joppa. A great sheet full of animals appeared, and a voice told him to eat what he had always considered unclean. The Spirit then instructed him to follow three strangers to the home of a Roman centurion, and once he arrived and began to preach, the Holy Spirit fell on people who, by every category Peter had ever known, should not have been eligible. It reads, at first glance, like a story about God updating the rules, widening the circle, and deciding at last to include people He had previously excluded.
But that reading gets the story exactly backwards, and the rest of this post is about why.
Across this series we have walked with Peter step by step: past the threshold of a house no observant Jew would willingly enter, through a solemn act of speech that signalled something weighty was coming, into a collision with a truth he could no longer avoid, and past the ancient reflex of judging people by the face they present. Every step has pressed toward one conclusion, and it is the theological heart of everything Peter declared in Acts 10:34. What changed in Caesarea was not God. It was Peter.
The final word of Peter’s declaration in the Greek text is θεός (theos, “God”), and it stands at the end of the sentence, which is where Greek often placed its most emphatic word. Everything Peter had been building toward, the partiality he denied, the face-receiving he rejected, all of it rested on this single reality: God, not as a theological concept floating in abstraction or a philosophical category to be debated in a lecture hall, but the living, self-existent, unchangeable One whose nature Peter was only now beginning to grasp.
That word, “God,” carried behind it everything the Hebrew Scriptures had been declaring for centuries. When Moses stood before the burning bush and asked for a name, God did not give him one. What He gave Moses instead was a declaration of being: אֶהְיֶה אֲשֶׁר אֶהְיֶה (ehyeh asher ehyeh, “I AM THAT I AM”). This was not a title in the ordinary sense. It was the first person singular of the Hebrew verb הָיָה (hayah, “to be”), expressing continuous, unbroken existence that is not located at any single point on a timeline but encompasses all of reality. God did not say “I was” or “I will be”; He said “I AM,” and the force of that declaration is that His being has never been subject to interruption or development, and that He does not shift from what He was into something He has not yet become.
This matters enormously for what happened in Caesarea, because if God simply IS, then He does not become something He was not before, and He does not revise His approach in response to circumstances. The God who stood behind Peter’s declaration in Acts 10:34 was exactly the same God who had spoken to Abraham, who had led Israel through the wilderness, who had “inhabited” the Temple, and who had spoken through the prophets. Peter was not encountering a revised version of the Almighty or an expanded edition of the divine character; he was encountering the same God, constant across every encounter recorded in Scripture, and what had to shift was his own understanding.
The prophet Malachi heard this constancy stated directly: “For I am the LORD, I change not; therefore ye sons of Jacob are not consumed” (Malachi 3:6). The logic of the verse deserves careful attention, because it ties Israel’s survival to God’s unchanging nature. If God could change, then His promises would carry no certainty, and if He could shift from mercy to caprice, then no covenant would hold. But because He does not change, because He is the “I AM,” His word stands, and His character holds across every generation.
James pressed the same truth further when he wrote that with God there is “no variableness, neither shadow of turning” (James 1:17), borrowing his language from astronomy. Celestial bodies are always in motion, and because they move, the angle of their light changes with every passing hour, so that the shadows they throw never remain in one place for long. God, James insisted, is nothing like this. There is no παραλλαγή (parallage, “variation”) in Him, no change in how He appears depending on the angle from which you approach, and no τροπῆς ἀποσκίασμα (tropes aposkiasma, “shadow cast by turning”) because He does not turn. He is pure, constant light, without flicker or variation, and He has been so from eternity.
So when Peter, standing in a Gentile’s front room in Caesarea, declared that God is no receiver of faces, he was not reporting a change in how God deals with Gentiles. What poured out of him was an admission that his own picture of God had been too small. God’s refusal to receive faces was not a recent development; it belonged to His nature, and it always had. Cornelius did not need God to change in order to be accepted, and God did not need to revise anything in order to receive him. What needed to change was Peter’s assumption that the God of Israel belonged exclusively to Israel.
Think about how deeply embedded that assumption was. Peter had grown up in a culture that drew sharp, visible boundaries between Jew and Gentile, and he had observed the food laws that symbolised Israel’s separateness for his entire life. He would not enter a Gentile’s home, he called non-Jewish people “common” and “unclean” (Acts 10:28), and these were not casual preferences or social habits but theological convictions woven into the fabric of his identity, reinforced by community, by tradition, and by decades of practice. Peter did not merely think Gentiles were different from Jews; he believed, without ever quite examining the belief, that God’s nature was somehow directional, aimed primarily at Israel and available to others only secondarily, if at all.
And that belief was fundamentally wrong, because God’s nature is not directional but constant. The sun does not shine more brightly on one continent than another; it shines equally, fully, and without preference, and those who step into the sunlight experience warmth while those who remain indoors do not, though the sun has not chosen one over the other. It is simply being what it is. In the same way, Peter’s belief that God favoured Israel over the nations was not a reflection of reality but a human construct, and it could not survive contact with the truth.
You may recognise something of Peter’s assumption in yourself, because most of us carry a version of it, even if we would never articulate it so bluntly. We assume, somewhere beneath our stated theology, that God is closer to people like us, that our tradition or our worship style or our way of reading Scripture positions us nearer to the centre of divine attention. We may not say it, and we may not even think it consciously, but it shapes how we treat people who pray differently, worship differently, or come from different backgrounds, and it is the same error Peter had to unlearn.
What Peter came to see in Caesarea was something far more unsettling than a policy update. God had not begun accepting Gentiles; He had never been the sort of God who parcels out acceptance based on bloodline. God’s character had not expanded to accommodate a new group of people; Peter’s understanding had contracted around a fiction, and it needed to break open.
And what broke it open was not a private decision inside Peter’s mind but the truth about God’s nature pressing against his resistance until the resistance gave way. The vision on the rooftop, the voice saying “What God hath cleansed, that call not thou common” (Acts 10:15), the arrival of Cornelius’s messengers, the Spirit’s instruction to go with them: each of these was truth making itself unavoidable, and Peter’s old categories simply could not contain what was actually true about God. So the categories collapsed, not because God forced them open, but because truth is heavier than assumption, and assumption eventually gives way under the weight.
What Repositioning Looks Like
When someone repositions themselves before a constant God, the experience can feel as though God has suddenly acted upon them, as though something dramatic has happened on the divine side. But the drama belonged entirely to Peter. The movement was in him, not in God.
Consider what actually shifted. Peter’s categories changed: the line he had drawn between “clean” and “unclean” people dissolved, not because God erased it, but because Peter recognised that it had never reflected God’s character in the first place. His expectations changed: he had expected God to care about nationality, and he had expected the boundaries of Israel to function as the boundaries of God’s concern, but when the Holy Spirit fell on Cornelius’s household before baptism and before any of the expected qualifications had been met, those expectations were overturned, not because God had become unpredictable, but because Peter’s predictions had been based on a misunderstanding. And his language changed. “God hath shewed me that I should not call any man common or unclean” (Acts 10:28), he said, and the vocabulary he had used his entire life to classify human beings was no longer available to him, because once you see that God’s constancy extends to every nation, you can no longer speak about people as though some of them are disqualified by birth.
This is what repositioning always looks like in practice: it is not a feeling and not a mystical experience, though it may involve deep emotion, but a shift in how you see, how you speak, and ultimately how you live. The person who repositions themselves before the constant God begins to bear the marks of that constancy in their own life, and they stop lifting faces, stop ranking people, and stop assuming that God’s attention is a scarce resource distributed unequally. They begin to reflect, however imperfectly, the impartiality of the God they claim to follow.
This is also where the original design of humanity resurfaces. When God created human beings in His image (Genesis 1:26–28), He entrusted them with a calling: to reflect His character, to exercise responsibility within creation, and to experience the abundance of a life aligned with its Source. That calling was never limited to one ethnicity, because the image of God was placed in humanity as a whole, not in Israel alone and not in any single nation or tribe. Every person who repositions themselves in trust toward the constant God begins to recover what was always intended: identity as an image-bearer, purpose in expressing God’s character, and the experience of living the way a human being was designed to live.
Peter’s journey from Joppa to Caesarea was not merely a geographical trip but the journey from a contracted understanding of God to one large enough to contain the full scope of His character, and the extraordinary thing is that God did not have to do anything for this to happen. God was already there, already constant, already impartial, already everything Peter was only now discovering. The only thing that needed to move was Peter.
The same is true for you. If there is a wall in your thinking that separates people into those who deserve God’s full attention and those who do not, the wall is not in God but in you, and if there is a category in your theology that makes some people more acceptable to God than others based on anything other than how they have oriented themselves toward Him, the category is yours and not His. God has not built those walls; we have, and the truth about who God is, constant, impartial, the same toward all, will eventually press against them until something gives.
You can resist that pressure, just as Peter did three times on the rooftop before he finally listened, but the truth does not go away because you refuse it. It waits, and it presses, and eventually, in one room or another and in one encounter or another, it becomes impossible to pretend you have not seen it.
God did not change in Caesarea, and He has never changed anywhere. The “I AM” of Exodus 3:14 is the same God Peter encountered in Cornelius’s living room, and the same God you encounter today. What changed was a fisherman from Galilee who had spent his whole life thinking God was smaller than He actually is, and when Peter’s theology finally grew large enough to hold the truth, the world looked completely different, not because the world had changed but because Peter could finally see it as it had always been.
What remains, in the final part of this series, is to ask what happens when this truth is taken seriously, when the wall comes down not just in Peter’s mind but in ours.
For the full word-by-word exegetical analysis of Acts 10:34, including detailed treatment of every significant Greek word, see the complete study available on promiseave.org.
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