Origins
The word 'parable' descends from one of the most remarkably productive etymological lines in European languages. It comes from Greek 'parabolḗ' (παραβολή), a compound of 'para-' (beside) and 'ballein' (to throw). The literal image is of placing one thing alongside another for comparison — throwing a story next to a truth so that the truth becomes visible through analogy.
The Greek word 'parabolḗ' was used in rhetoric for any comparison or illustration. When the Hebrew Bible was translated into Greek (the Septuagint, third century BCE), the translators chose 'parabolḗ' to render the Hebrew 'māshāl,' which covered proverbs, riddles, allegories, and illustrative stories. This choice channelled the word into its dominant English meaning: the short narrative stories told by Jesus in the Gospels — the Prodigal Son, the Good Samaritan, the Sower and the Seed.
The word passed from Greek into Latin as 'parabola,' and from Latin into Old French. Here a remarkable split occurred. The learned form remained 'parabole,' preserving the sense of 'parable' or 'comparison.' But in popular speech, the word contracted dramatically — 'parabola' became 'paraula,' then 'parole,' meaning simply 'word' or 'speech.' This popular form became one of the most common words in the Romance languages: French 'parole' (word, speech), Italian 'parola' (word), Portuguese 'palavra' (word), Spanish 'palabra' (word). The same Greek term for 'a comparison thrown alongside' became the everyday word for speaking.
French Influence
From 'parole' in its sense of 'speech' came further English borrowings: 'parliament' (from Old French 'parlement,' a speaking, a discussion), 'parlour' (from Old French 'parloir,' a room for talking — originally the room in a monastery where monks were permitted to speak), and 'parole' itself (a prisoner's word of honour, borrowed directly from French).
Meanwhile, the mathematical term 'parabola' — the U-shaped curve — is the very same word. The Greek mathematician Apollonius of Perga (c. 262–190 BCE) named three conic sections using rhetorical terms: 'parabolḗ' (comparison, meaning the section is 'equal to' a certain area), 'hyperbolḗ' (excess, thrown beyond), and 'élleipsis' (deficiency, falling short). All three terms — parabola, hyperbole, ellipsis — survive in both mathematical and literary English, a sign of the Greek habit of seeing geometry and rhetoric as branches of the same intellectual tree.
The Greek root 'ballein' (to throw) is itself enormously generative. 'Symbol' is from 'syn-' (together) and 'ballein' — something thrown together, a token of recognition. 'Problem' is from 'pro-' (forward) and 'ballein' — something thrown forward, an obstacle. 'Ballistic' comes from 'ballein' directly, through 'ballein' > 'bállein' > 'ballistḗs' (one who throws). 'Diabolical' is from 'dia-' (across) and 'ballein' — to throw across, to slander.
Latin Roots
The parable as a literary form predates Christianity. Aesop's fables, the parables of the Buddha, and the wisdom literature of the ancient Near East all employ the technique of placing a simple narrative alongside a complex truth. But the Christian parables, filtered through the Greek word 'parabolḗ' and its Latin descendant, gave the English word its specific gravity. A parable is not merely any story with a moral — it is a story whose meaning unfolds through comparison, a narrative placed beside reality to reveal what direct statement cannot.