Concept

Molinism

Intro

Molinism is a theory about how God can know everything that will happen, including everyone's free choices, without overriding anyone's freedom.

The idea is named after Luis de Molina, a Spanish Jesuit who wrote it up in 1588. His move was to say God has three kinds of knowledge, and one in the middle is what makes everything work.

Picture it this way. Necessary knowledge: God knows all the things that could happen in any possible world. Free knowledge: God knows what will actually happen in this world. In between sits middle knowledge: God knows what every possible person would freely choose in every possible situation, even situations that never come up.

So when God decides which world to create, He is not flipping a coin. He looks across all the possible setups, sees who would freely respond to grace in which conditions, and picks the world that brings the best result while leaving every choice genuinely free. People still choose. God still gets the outcomes He intends. Both at once.

Molinists point to Bible passages like 1 Samuel 23:10-13 (God tells David what the men of Keilah would do if David stays) and Matthew 11:21-23 (Jesus says the cities of Tyre and Sidon would have repented if they had seen His miracles) as places where Scripture itself attributes this kind of "what if" knowledge to God.

Critics have pushback. The biggest objection is called the grounding problem: if these "what would happen" facts depend on what free people would choose, and free choices are not necessary, then what makes those facts true before the people even exist? Molinists have answers; the debate is ongoing.

In full

The doctrine, developed by the Jesuit theologian Luis de Molina (1535-1600) in his Concordia Liberi Arbitrii cum Gratiae Donis ("The Harmony of Free Will with the Gifts of Grace," 1588), that God possesses middle knowledge (Latin scientia media): a knowledge of the counterfactuals of creaturely freedom, i.e., what every possible libertarian-free creature would freely do in every possible circumstance, that is logically prior to His decree of creation. Middle knowledge supplies the metaphysical mechanism by which exhaustive divine sovereignty and providence can be reconciled with libertarian creaturely freedom, and is one of the three principal Protestant-evangelical answers (alongside Calvinism and Arminianism) in the Free Will / Sovereignty cluster.

Core claim

God's omniscience comprises three logically ordered moments:

Natural knowledge (scientia naturalis), God's knowledge of all necessary truths and all possible worlds (what could be). Logically prior to the divine will; the content is necessary, not chosen.
Middle knowledge (scientia media), God's knowledge of all counterfactuals of creaturely freedom (CCFs): for every possible libertarian-free creature in every possible circumstance, what that creature would freely do. Logically prior to the divine creative decree but contingent in content (the CCFs are true but not necessarily true; they depend on the would-be free choices). This is the distinctive Molinist claim.
Free knowledge (scientia libera), God's knowledge of what will actually happen in the world He freely chose to create. Logically posterior to the decree.

By surveying which feasible world (a world whose CCFs God can actualize given middle knowledge) best realizes His purposes, God strongly actualizes the circumstances and weakly actualizes the creaturely free choices made in those circumstances. Sovereignty is exhaustive (God chooses which feasible world to create) without compromising libertarian freedom (the creature's choices are genuinely free in each circumstance).

Definition: counterfactuals of creaturely freedom (CCFs)

A CCF is a subjunctive conditional of the form: If creature S were placed in circumstance C, S would freely do A. Standard textbook example (William Lane Craig): "If Peter were in circumstances C in the high priest's courtyard, he would freely deny Christ three times." The CCF's antecedent is a possible circumstance; its consequent is the libertarian-free action S would perform. Molinists hold that CCFs have determinate truth values logically prior to the divine creative decree, and that God knows them.

The contested philosophical question is the grounding objection: in virtue of what are CCFs true, given that the would-be free choices are contingent and the would-be agents may not actually exist? Robert Adams and William Hasker pressed this objection sharply; Molinists (Flint, Craig, Plantinga in The Nature of Necessity) defend the truth of CCFs as primitive subjunctive truths or as grounded in the would-be agent's libertarian dispositions.

Biblical foundation

Molinists argue Scripture explicitly attributes counterfactual knowledge to God:

1 Sam 23:10-13, David asks YHWH whether the men of Keilah will surrender him to Saul if he stays; God answers that they would. David leaves; the surrender never actually happens. God knows the CCF.
Matt 11:21-23, Jesus declares that if the mighty works done in Chorazin and Bethsaida had been done in Tyre and Sidon, they would have repented in sackcloth and ashes. A clear CCF about pagan cities that did not actually receive those works.
Jer 38:17-18, God tells Zedekiah what will happen if he surrenders to the Babylonians, and what will happen if he does not.
Wisdom 4:11 (deuterocanonical), the righteous youth was taken early "lest evil should change his understanding."
Acts 4:27-28, Herod, Pilate, the Gentiles, and Israel did "whatever Your hand and Your purpose predestined to take place." Read by Molinists as God's providential ordering of free creaturely choices via middle knowledge.

Historical development

Luis de Molina (1535-1600), Spanish Jesuit; Concordia (1588) is the founding text. Written into the De Auxiliis controversy (1582-1607) between the Jesuits (Molinists) and the Dominicans (Bañezians, who held physical premotion, a more deterministic Thomistic view). Pope Paul V suspended the controversy in 1607 without a definitive verdict; both views remained licit in Catholic theology.
Francisco Suárez (1548-1617), refined Molina's account; gave middle knowledge a developed philosophical defense (De Scientia Dei).
17th-c. Catholic theology, Molinism becomes the dominant Jesuit position; the Dominicans hold the line for Bañezianism / Thomistic predestination.
20th-c. analytic revival, Alvin Plantinga, The Nature of Necessity (1974), uses middle knowledge in the free-will defense against the Problem of Evil (the "transworld depravity" argument). Plantinga is not strictly a Molinist but rehabilitated CCFs in analytic philosophy.
Thomas P. Flint, Divine Providence: The Molinist Account (1998), the standard contemporary treatment.
William Lane Craig, The Only Wise God (1987); Divine Foreknowledge and Human Freedom (1991); numerous popular and academic defenses. Craig is the leading evangelical-Protestant Molinist.
Kenneth Keathley, Salvation and Sovereignty: A Molinist Approach (2010), a Baptist soteriological development of Molinism (the "ROSES" alternative to TULIP).

Spread of positions (where Molinism stands)

vs. Calvinism, agrees on the fact of exhaustive divine sovereignty over salvation and providence; disagrees on the mechanism. Calvinism grounds providence in God's effectual decree and rejects libertarian freedom; Molinism grounds providence in God's middle knowledge of libertarian counterfactuals. Many evangelicals adopt Molinism precisely to retain a robust doctrine of sovereignty without the Calvinist commitments to limited atonement, irresistible grace, and unconditional election.
vs. Arminianism, significant overlap (both affirm libertarian freedom, universal atonement intent, conditional election). Molinism adds scientia media as the metaphysical mechanism that explains how God can sovereignly providentially order a world full of libertarian-free creatures. Many Arminians are functionally Molinist (Keathley, arguably Walls); some (Olson) insist Arminianism does not require middle knowledge.
vs. Open Theism, sharp opposition. Molinism vigorously affirms exhaustive divine foreknowledge of future free choices (indeed, of all counterfactual free choices). Craig and Flint have been principal critics of Open Theism.
on freedom: requires libertarian freedom; rejects Compatibilism as inadequate to genuine freedom and as collapsing into Calvinist determinism.

Standard objections (steel-manned)

The grounding objection (the principal philosophical objection, pressed by Robert Adams, William Hasker, Tom Flint himself addresses it). What makes a CCF true, given that its truth-maker (the actual free choice of the actual agent) doesn't exist in the relevant sense? If nothing grounds them, how can they have determinate truth values? Molinist replies: CCFs are primitive subjunctive truths; or they are grounded in the would-be agent's libertarian dispositions; or grounding is the wrong category for subjunctive conditionals.
The feasibility objection. Why should God be limited to feasible worlds rather than able to create any possible world? If certain combinations of free choices simply aren't on the menu (because the relevant CCFs aren't true), is divine omnipotence really preserved? Molinist reply: this is exactly what it means for the creatures to be free; God's creating libertarian-free creatures necessarily limits His range to feasible worlds.
The collapse-into-Calvinism objection. If God chooses which feasible world to actualize, knowing all the CCFs, isn't this functionally equivalent to electing, God effectively decides who is saved by deciding which world to actualize? Molinist reply: yes, God ordains via middle knowledge, but the creature's choice is still libertarianly free in that world; God did not cause the choice. The creature's choice grounds the CCF, not the reverse.
The Calvinist "cart before the horse" objection. Molinism makes God's decree depend on creaturely free choice (via the CCFs), inverting the proper order: God's will should be prior to creaturely will. Molinist reply: God's decree of which world to actualize is prior; the CCFs' truth values are not chosen by God but known by God, leaving sovereignty intact.

Tensions

The grounding objection is widely regarded as Molinism's hardest philosophical challenge; defenders accept it as a genuine difficulty and offer competing solutions.
The relation of Molinism to Arminianism is institutionally fluid: Molinism is a metaphysical thesis about divine knowledge; Arminianism is a soteriology. They can be combined (Keathley) but need not be (Olson).
Within Catholicism, the De Auxiliis debate was suspended, not resolved; Molinism remains one licit Catholic position alongside Bañezian / Thomistic accounts.
Molinism's appropriation by Protestants (Plantinga, Craig, Keathley) is a 20th-c. development; it was historically a Jesuit-Catholic position.