ris3n's Apologetics Codex

Concept

Messianic Prophecy Probability

Intro

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In 1944 a mathematics professor named Peter Stoner published a small book called Science Speaks. He asked a simple question: what are the odds that one man could fulfill, by sheer accident, the specific Messianic predictions found in the Old Testament hundreds of years before he was born? Then he tried to do the math.

Stoner picked eight clear, specific OT prophecies, things like the Messiah being born in Bethlehem (Micah 5:2), riding into Jerusalem on a donkey (Zechariah 9:9), being betrayed for thirty pieces of silver (Zechariah 11:12), having his hands and feet pierced (Psalm 22:16). He asked his students to assign deliberately conservative probabilities to each one happening by chance. He multiplied them together. The number came out to about 1 in 10 to the 17th power. To make that intuitive he painted a picture: cover the state of Texas in silver dollars two feet deep, mark one of them, mix them up, let a blindfolded person walk across the pile and pick one. That is roughly the odds of one person hitting eight prophecies at random. With 48 prophecies the number balloons to 1 in 10 to the 157.

The argument has been beloved by popular apologists ever since, and skeptics have raised real and important objections. The page below treats both sides honestly.

The objections fall into three camps. First, prophecy selection: did Stoner pick the easiest cases and ignore prophecies Jesus did not fulfill? Second, independence: many of the prophecies are not independent, knowing one fulfillment makes others much more likely, which inflates the cumulative number. Third, self-fulfillment and interpretive retrofitting: could the Gospel writers have shaped their accounts to fit prophecies, rather than the prophecies being independently fulfilled in history? Each of these deserves a careful answer.

Even after the objections are weighed, something remains. There is a real cluster of OT predictions that Jesus did fulfill. Many of them name specifics he could not have engineered (his birthplace, his execution method, the lots cast for his clothing, the betrayal price). The honest case is not the showy 1-in-10-to-the-157 number; it is the more sober observation that the convergence of multiple independent prophecies on one historical figure is striking, and the best naturalistic alternative explanations have problems of their own.

The page below walks Stoner's calculations, the objections, the better contemporary defenses (Hugh Ross has tightened the methodology), and the place of the argument in the broader cumulative case for Christianity.

In full

The probabilistic argument from fulfilled Messianic prophecy to the divine origin of Scripture and the messianic identity of Jesus. Most associated with Peter Stoner's calculations in Science Speaks: Scientific Proof of the Accuracy of Prophecy and the Bible (Moody Press, 1944; revised 1958, 1976), in which Stoner estimated that the cumulative probability of any one man fulfilling 8 specific OT messianic prophecies by chance is on the order of 1 in 10^17, rising to roughly 1 in 10^157 for 48 prophecies. Apologetically deployed as a quantitative case for divine intervention; mainstream and skeptical critique focuses on the choice and counting of prophecies, the independence assumption, and the possibility of self-fulfillment or interpretive retrofitting.

Core claim

If the OT contains a sufficient number of specific predictions about a single future figure, and one historical figure (Jesus) demonstrably fulfills all of them, the antecedent probability against this happening by chance is so vanishingly small that the best explanation is supernatural foreknowledge, i.e., divine inspiration of Scripture and divine identification of the Messiah.

The argument is cumulative-evidential, not deductive. The structure (after Stoner):

  1. Estimate a chance probability of fulfillment for each individual prophecy (often deliberately conservative).
  2. Multiply the individual probabilities (assuming independence) to obtain a cumulative probability.
  3. Compare the resulting figure to background "negligibility" thresholds (Stoner's celebrated illustration: silver dollars covering Texas two feet deep, marking one, mixing them, drawing it blind on the first try ≈ 1 in 10^17).
  4. Conclude that chance is not a viable explanation; the only remaining explanation is divine foreknowledge.

Stoner's specific calculations (illustrative)

Stoner's headline 1-in-10^17 figure draws on 8 prophecies, including (with his estimated chance probability):

Multiplied (independence assumption): ~1 in 10^17. Stoner went on to extend the calculation to 48 prophecies for ~1 in 10^157.

The 48-prophecy extension

The expanded list typically draws from a standardized corpus including:

Major proponents and works

  • Peter W. Stoner (mathematician, Pasadena City College / Westmont College), Science Speaks (1944, rev. 1958, 1976), the founding work of the probabilistic-prophecy argument. The American Scientific Affiliation reviewed the calculations and approved them as mathematically sound given Stoner's input probabilities.
  • Robert C. Newman (mathematics PhD; Biblical Theological Seminary), coauthor of later editions of Science Speaks; refinement of the calculations.
  • Josh McDowell, Evidence That Demands a Verdict (1972 / numerous revisions; with Sean McDowell in current editions); the standard popular-apologetics adoption of the argument.
  • Norman L. Geisler, Christian Apologetics (Baker, 1976); I Don't Have Enough Faith to Be an Atheist (with Frank Turek, 2004); deploys the prophecy-probability argument as part of the cumulative case.
  • John Lennox, uses prophecy fulfillment in God's Undertaker (2009) and public-debate contexts; more cautious than Stoner about specific probability figures.
  • John Ankerberg and John Weldon, Ready with an Answer (Harvest House, 1997).
  • Lee Strobel, The Case for Christ (1998) ch. 10; introduces the Stoner argument to a popular audience.

Apologetic / theological deployment

The argument is deployed in three ways:

  1. As evidence for divine inspiration, only divine foreknowledge could account for the specific accuracy.
  2. As evidence for Jesus's messianic identity, only Jesus among historical claimants fits the full prophetic profile.
  3. As a positive evidential case alongside the Resurrection, Bible Manuscript Reliability, Biblical Archaeology, Cosmological Arguments, Teleological Arguments, and Moral Arguments in cumulative-case apologetics.

The argument is widely used in evangelistic / pre-evangelistic settings precisely because the numerical force is rhetorically arresting.

Critiques and responses

Critics, both academic and popular, contest several premises:

  • Cherry-picking. The 48 prophecies are drawn from the OT in light of NT fulfillment claims; OT texts not fulfilled (or with embarrassing non-fulfillments under Jesus's first coming, e.g., the universal-peace and political-kingdom motifs of Isaiah 11, Micah 4) are filtered out or relegated to the Second Coming. Defenders: the relegation to the Second Coming is internally motivated by NT-imminent / NT-ultimate distinctions, not ad hoc; the bona fide fulfilled prophecies remain.
  • Self-fulfillment. Some prophecies could be self-fulfilled by a deliberate actor, e.g., riding a donkey into Jerusalem (Zechariah 9.9) is something a messianic claimant aware of the prophecy could do intentionally. Defenders: many prophecies are not self-fulfillable (place of birth, manner of execution, manner of burial, post-mortem events, others' actions like casting lots for garments), and the case rests on the cumulative pattern rather than any one self-fulfillable element.
  • Ex eventu interpretation. Critics argue many "prophecies" are NT-era retrojective readings of OT texts that were not understood as messianic prior to Jesus, with the Suffering Servant of Isaiah 53 originally referring to corporate Israel (a major Jewish reading) rather than an individual Messiah. Defenders: pre-Christian Jewish messianic exegesis (Dead Sea Scrolls, Targums) shows several of the key texts already read messianically, and the burden is on the critic to explain why all candidate texts converged onto one historical figure.
  • The independence assumption. Stoner's multiplication of probabilities assumes the prophecies are statistically independent. Critics: many are causally linked (a Jewish messianic claimant in 1st-c. Judea is automatically more likely to be of Davidic lineage, born in a Judean town, executed by Romans, etc.). Defenders: Stoner deliberately chose conservative numbers and acknowledges the imprecision of the absolute figure; the argument's force is order-of-magnitude, not precise probability.
  • Numerical theatricality. The specific 1-in-10^17 figure is rhetorically arresting but methodologically fragile, the inputs are estimated, sometimes generously rounded, and small changes propagate explosively across 8 multiplicands. Skeptics treat the precise numbers as a distraction; sympathetic critics (including some evangelicals) recommend deploying the argument qualitatively rather than quantitatively.
  • Selection bias / unfalsifiability. Without a control group (other historical figures and the prophecies they coincidentally fulfilled), the probability claim is hard to test. Defenders: Jesus is the unique figure whose entire biographical pattern is the subject of pre-existing prediction.

Mainstream Jewish, Muslim, and secular biblical-studies scholarship generally rejects the argument's conclusion on a combination of these grounds. Modern Christian apologists (Geisler, Lennox, Sean McDowell) tend to retain the argument while moderating Stoner's specific figures.

See also