Where the traditions land

Population figures are each tradition's own most recent published count. Eligibility is set against the World Christian Database, the standard reference for global denominational data.

Why the disagreement

Every seated tradition affirms, in some form, that God's own character and ultimate will don't change — one of the rare questions in this format where the formal theological answer converges almost completely. What differs is how each tradition explains why prayer still matters if that's true, and how urgently or mechanically it describes the relationship between asking and receiving.

Catholic, Eastern Orthodox, and Oriental Orthodox teaching state the resolution in nearly identical terms: prayer doesn't change God, it changes the person praying, aligning a human will with a divine will that was already good. A well-known line from Orthodox spiritual writing puts it directly: "God does not need our prayers! He knows, even before our petition, what we need... We need prayer: it assimilates a person to God." Catholic teaching reaches the same formula through its own tradition: prayer doesn't alter God's mind, it brings the one praying "into harmony with God's perfect and holy will."

Reformed teaching states the same conclusion more systematically, tying it directly to God's eternal decree. The Westminster Larger Catechism describes God executing his purposes "according to his infallible foreknowledge, and the free and immutable counsel of his own will" — prayer isn't excluded from that decree, it's one of the ordained means built into it from eternity, alongside the outcomes it's used to bring about, so praying and the thing prayed for were never really two separate events in sequence.

Anglican, Lutheran, Methodist, Southern Baptist, Pentecostal, and Adventist teaching affirm the same underlying immutability without building as explicit a philosophical system around it, and their devotional language leans further toward describing prayer as a real, sometimes urgent encounter with God rather than a settled mechanism. Luther's own writing on prayer draws directly on Jacob wrestling with God at the Jabbok, describing persistent, even demanding prayer as a legitimate way of holding God to his own promises. Pentecostal teaching carries that emphasis furthest in practice: prayer, especially prayer for healing, is treated as genuinely powerful and effectual — the prayer of faith "will make the sick well" — language that foregrounds prayer's real effect far more than it dwells on the underlying metaphysics of divine changelessness.

LDS teaching states divine unchangeableness directly in its own scripture — "God is the same yesterday, today, and forever, and in him there is no variableness neither shadow of changing" — while describing God as a personal being who communicates with and responds to individual prayer within that unchanging character, not despite it.

Jehovah's Witnesses hold that Jehovah genuinely hears and answers prayer, but frame an unanswered request as a matter of his own timing rather than his mind being changed by the asking — a request not granted is treated as "not yet," not evidence that prayer failed to matter.

Solving the disagreement

Between Catholic, Orthodox, and most Protestant teaching, this isn't really a live disagreement so much as the same conclusion reached by traditions that don't always agree on much else. Where a real, substantive difference remains is between Reformed teaching's fully deterministic account — every prayer and its outcome are both already fixed in a single eternal decree — and the more open, dialogical language Lutheran, Wesleyan, and Pentecostal teaching use, in which God's unchanging character coexists with something that reads more like a genuine back-and-forth. That's the same underlying dispute about divine sovereignty and human freedom that surfaces whenever this format touches predestination, just approached here through prayer instead of salvation directly — a real philosophical fork about whether the future is, in any meaningful sense, open, that centuries of careful argument on both sides haven't closed.

LDS and Jehovah's Witness teaching aren't disagreeing with the immutability doctrine so much as applying it with less formal philosophical machinery than Reformed or Catholic teaching brings to the same text. Both traditions affirm the same biblical language about God's unchanging character directly, without needing to reconcile it with a developed doctrine of eternal decrees — which makes their answer converge with the rest of the table's conclusion, even if it arrives there by a shorter, less systematized route.

What would actually resolve the deeper fork, where it exists, isn't new evidence about prayer specifically — it's the same question this format keeps returning to about whether God's foreknowledge and human freedom (here, the freedom to pray or not, and to shape what happens by doing so) can both be fully real at once, a metaphysical question no side has found a way to settle by argument alone.

Sources

Same standing source per tradition on every post, not hunted per question.

• Catholic — Catechism of the Catholic Church
• Eastern Orthodox — Nicene-Constantinopolitan Creed (binding across all jurisdictions); The Longer Catechism of St. Philaret of Moscow (widely used, not binding on every jurisdiction)
• Oriental Orthodox — Catechism of the Coptic Orthodox Church, Fr. Tadros Y. Malaty (Amazon — no full free text found)
• Anglican — Thirty-Nine Articles of Religion
• Lutheran — Book of Concord
• Reformed/Presbyterian — Westminster Confession of Faith
• Methodist/Wesleyan — Articles of Religion
• Southern Baptist Convention — Baptist Faith & Message 2000
• Pentecostal (Trinitarian) — Assemblies of God Statement of Fundamental Truths
• Seventh-day Adventist — 28 Fundamental Beliefs
• LDS — Book of Mormon and Doctrine and Covenants
• Jehovah's Witnesses — What Does the Bible Really Teach?