Is it OK to call someone a fool?

What follows is one scholar’s way of reading this disagreement — a critical-historical view that often concludes the texts genuinely disagree. It draws on the peer-reviewed sources listed below and stands as one position among the answers above, presented for transparency, not as GEBible’s position.

How critical scholarship weighs this: Leans toward a genuine contradiction

This summarizes where critical scholarship tends to land on this tension — a report on the field’s center of gravity, not GEBible’s own ruling.

The tension is genuine and sits inside a single Gospel. Matthew 5:22 concludes the first antithesis with a graded series of judgments: anyone angry with a brother is liable to the krisis (local court); whoever says rhaka (a transliterated Aramaic/Hebrew term of contempt, reqa', roughly "empty-head") is liable to the synedrion; and whoever says mōre is liable to the Gehenna of fire. The escalation is rhetorical, moving from emotion to two verbal insults of increasing gravity, and the Greek of the third term is unambiguous: mōre is the vocative of mōros, the root behind English "moron." The same writer then has Jesus address the Pharisees as mōroi kai typhloi — "fools and blind" — in Matthew 23:17 (and again, with the adjective, in 23:19), and Luke 11:40 has Jesus call the Pharisees aphrones, "fools," a near-synonym from a different root. Behind all of this stands the Hebrew Bible's free use of the category: Psalm 14:1 and its near-duplicate Psalm 53:1 (the doublet reflects an Elohistic re-edition of the same poem) open with nabal — "the fool has said in his heart, there is no God" — and the wisdom literature uses kesil and 'ewil constantly. The label is not merely permitted there; it is a theological diagnosis.

Davies and Allison, in the ICC, flag the internal friction directly and treat 5:22 as part of Matthew's intensification of Torah rather than a literal forensic statute. The strongest harmonizations come in three forms. First, the lexical move: Gustaf Dalman, Matthew Black, and Joachim Jeremias floated readings in which the underlying term is not Greek mōros but Aramaic moreh/mara, "rebel" (cf. Numbers 20:10, where Moses calls Israel ha-morim), so that Jesus condemns a specific charge of apostasy, not the ordinary word "fool." Second, the genre move (Carson, France): the Sermon is hyperbolic ethical instruction whose target is murderous contempt of the heart, not a vocabulary ban, so 23:17 — a prophetic rebuke without hatred — falls outside its scope. Third, the Christological move: Jesus as divine judge may pronounce on character in a way disciples may not.

Each has weaknesses. The Aramaic-moreh proposal has no manuscript support; every Greek witness reads mōre, and Luz rejects the retroversion as speculative, noting that Matthew's audience read Greek and would hear mōros. It also fails to explain why 5:22 pairs mōre with rhaka, an ordinary insult, suggesting Matthew intends ordinary insults. The genre argument is the most defensible — and it does real work, because the antitheses elsewhere use deliberate overstatement (gouging out an eye, cutting off a hand in 5:29-30) — but conceding hyperbole concedes that 5:22 does not function as a flat prohibition, which is precisely the harmonizer's point and the skeptic's: read literally it forbids what Jesus then does. The Christological exception, finally, is unfalsifiable; it can absolve any inconsistency and so explains nothing.

The critical reconstruction, developed by Betz in the Hermeneia Sermon on the Mount and by Luz, is that the two passages were shaped in different rhetorical registers. Matthew 5:22 belongs to the antitheses, where the evangelist radicalizes the sixth commandment by tracing murder back to contempt; Matthew 23 is a woe-discourse reflecting the bitter polemic of the Matthean community after its rupture with formative Judaism, where "fools and blind" is conventional prophetic invective. The redactor did not harmonize them because they served distinct functions. Set alongside the Psalms' confident use of nabal as a theological label, the canon at face value prohibits the insult, deploys it, and builds doctrine on it.

Where the critical reading lands: a real intra-Gospel contradiction, mitigated but not dissolved by genre. The harmonizations succeed only by rewriting the Greek, downgrading the Sermon to hyperbole, or pleading a divine exemption.