What Is Divine Simplicity?

Question 2051.

Divine simplicity means that God is not assembled out of separate parts or ingredients the way a created thing is, a portion of love here, a measure of power there, a quantity of holiness added on top. He is entirely, undividedly and simultaneously all that He is, in every attribute, at every moment, without any of His attributes existing as detachable components that could theoretically be separated from the rest of who He is. Deuteronomy 6:4 begins here in miniature: “Hear, O Israel: The Lord our God, the Lord is one.”

I will admit divine simplicity is one of the harder doctrines to preach well, since it sounds, on first hearing, more like a technical point from a philosophy seminar than a truth with practical weight. I want to show why it actually matters a great deal, not simply defend it as an interesting curiosity for specialists.

Divine simplicity and the oneness of God

The Shema in Deuteronomy 6:4, which you can read at ESV.org, uses the Hebrew word echad, meaning one or united, the same word used of a man and wife becoming “one flesh” in Genesis 2:24. It describes a genuine, undivided unity rather than a mere numerical count. Applied to God, it excludes not only polytheism but also the idea that God is a composite being made up of separable parts.

This matters because it means none of God’s attributes function as an add-on to some more basic, neutral divine substance underneath them. God is not first a bare, characterless being who then happens to also possess love, holiness, power and wisdom as accessories. He simply is love, holiness, power and wisdom, at once, entirely, without division.

Divine simplicity and the unity of God’s attributes

This is why I resist thinking of God’s attributes as a list to be ticked off separately, as though His love could somehow operate independently of His holiness, or His justice independently of His mercy. Divine simplicity insists these are not separate departments coexisting inside God. They are different ways of describing the very same, single, undivided divine reality, seen from different angles. God’s love is always a holy love. God’s justice is always a merciful justice, worked out fully at the cross.

I think this explains why Scripture never presents a genuine conflict between God’s attributes that requires one to override another. What can look, from our limited vantage point, like tension between holiness and mercy at the cross turns out to be the perfect, undivided expression of both simultaneously, precisely because they were never separate ingredients competing for priority in the first place.

Does divine simplicity contradict the Trinity?

This is a fair question, since Christians also affirm three distinct persons within the one God. Divine simplicity concerns God’s undivided essence or nature, not the distinction of persons within that one nature. Father, Son and Holy Spirit are not three separate substances stitched together, nor is any one of them a fragment or portion of the whole divine nature. Each person is fully and entirely God, sharing completely in the one, undivided divine essence, while remaining genuinely distinct as persons.

This is admittedly a difficult balance to hold in the mind, and church history includes several serious errors made by theologians who resolved the tension too quickly in one direction or the other. I do not think it needs to be fully unravelled by careful human logic in order to be genuinely and confidently believed. The wider Church has confessed both of these truths together for roughly two thousand years now, without ever once claiming to have exhaustively explained precisely how the two fit together in every last philosophical detail.

Divine simplicity and why it matters pastorally

I think the practical value of divine simplicity shows up most clearly when someone is tempted to pit one of God’s attributes against another. Someone struggling with assurance might reason that God’s justice surely outweighs His mercy in their particular case, or that His holiness must make His love conditional on their own performance. Divine simplicity rules this kind of thinking out at the root. There is no competition inside God between these attributes, no internal committee where mercy occasionally loses the vote to justice.

At the cross, holiness, justice, mercy and love were not balanced against each other in careful proportion. They were all fully, simultaneously and undividedly expressed in a single act, because that is what divine simplicity means God is always doing, in everything He does.

Divine simplicity distinguished from a lack of complexity

It is worth clarifying what this doctrine does not mean, since the word simplicity easily misleads a modern reader. It does not mean God is simple in the sense of being basic, shallow or easy to fully understand. Paul’s doxology in Romans 11:33 moves in the opposite direction entirely: “Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgements and how inscrutable his ways!” Divine simplicity concerns the absence of separable parts within God’s being, not the absence of depth or mystery in knowing Him.

I think this distinction matters because some people, hearing the word simplicity, assume theologians are claiming God is easy to grasp intellectually. The opposite is closer to the truth. Precisely because God is not made up of separate, isolable pieces that could be studied one at a time and then reassembled, He remains genuinely beyond full human comprehension, even while being genuinely, personally knowable through Christ.

Stephen Charnock and later Reformed and Baptist theologians alike drew on this doctrine to explain why Scripture can say, in the very same breath, that God is love, that God is light, and that God is a consuming fire, without any contradiction between these descriptions. You can compare how differently English translations render 1 John 1:5 and 1 John 4:8 side by side using the study tools at Blue Letter Bible, where the underlying Greek makes clear these are not competing metaphors but complementary descriptions of the same single, undivided divine reality.

I have also found it useful, in teaching this doctrine, to contrast it with pagan mythology, where gods were routinely portrayed as collections of competing impulses, a god of war who might quarrel with a goddess of love, each representing a different fragment of divine power in perpetual tension with the others. The God of Israel is nothing like this. There is no internal committee of divine impulses inside Him, no fragment of His nature capable of working against another fragment.

Job’s friends, in a sense, fall into exactly this pagan-adjacent error, treating God’s justice as though it operates almost independently of, and occasionally in tension with, His compassion, as though a sufferer must simply be facing whichever attribute happens to be currently dominant. God’s own answer to Job at the very end of the book corrects this instinct without ever once using technical philosophical vocabulary, displaying instead the sheer, undivided grandeur of a Creator whose power, wisdom, and genuine care for Job all operate together seamlessly, never one attribute gained at the expense of another.

I try to let this shape ordinary pastoral counselling as well. When someone tells me they understand God loves them but fears He is secretly disappointed, keeping a kind of running tally of failures behind an otherwise pleasant exterior, I want to gently correct the picture at its root. That picture would effectively require God to be internally divided somehow, one part genuinely fond of the person and another part quietly displeased with them, functioning almost like two entirely separate attitudes housed uneasily inside a single being. Scripture simply will not let us picture God in that fragmented way at all. Whatever He is toward someone He has genuinely saved, He is that completely, fully and without any internal division whatsoever, in every single one of His many attributes at once, all of the time, without exception.

I want to be honest that some modern evangelical theologians have raised thoughtful questions about how far this classical doctrine should be pressed, worried that an overly strict version risks flattening the genuine relational and emotional language Scripture uses about God. I take that concern seriously and do not think it needs to be dismissed. My own approach, for what it is worth, is to hold firmly to the core biblical insight, that God is not composed of separable parts capable of any real internal conflict, while remaining genuinely cautious about extending the doctrine further into more speculative philosophical territory that Scripture itself never quite chooses to venture into on its own terms.

If you want to keep exploring the attributes of God, I have written related articles on divine immutability, how the persons of the Trinity relate, divine omniscience, each approaching this same, undivided God from a slightly different angle.

So, now what?

The next time you find yourself weighing one of God’s attributes against another, His justice against His mercy, His holiness against His love, remember divine simplicity. There is no committee inside God balancing competing priorities. There is one, undivided, entirely consistent God, fully Himself in everything He does toward you.

Hear, O Israel: The Lord our God, the Lord is one.

Deuteronomy 6:4