a lepton: the smallest coin in circulation, a tiny thin scrap of bronze worth so little that two of them came to about six minutes of a day's wage
Outside the Bible this is a plain, everyday Greek adjective meaning "thin, fine, small, slight." It comes from a verb meaning "to peel" or "to strip off the husk," so its root idea is something reduced to a thin scrap. Greek speakers turned the neuter form into a noun, "the thin one," and used it for small change, much as English once spoke of a thin dime. That is ordinary Greek, not special Bible vocabulary: writers like Plutarch used the same word to explain to Greek readers what the smallest Roman bronze coin was.
In the Greek Old Testament the word never means money at all. It is simply the word for fineness, and its uses there map out the whole idea:
- the shrivelled, thin ears of grain in Pharaoh's dream
- the manna lying on the desert floor as "fine as frost"
- the finely ground incense the high priest carried in his hands
- the "still small voice" Elijah heard, which the Greek renders as the sound of a thin breeze
By the time of the Gospels the noun had settled on money, and in Judea the smallest coin available was a crude little bronze piece struck in huge quantities by the Hasmonean and Herodian rulers and by the Roman governors. These pieces stayed in circulation for well over a century and were usually worn nearly smooth. Two of them equalled one Roman quadrans (κοδράντης), which is how Mark explains the sum: roughly a sixty-fourth of a day's pay. Two of them would not have bought a single sparrow, the cheapest food at the market.
All three appearances in the New Testament turn on how little the coin is worth. Twice it is the poor widow's offering, when she drops two of them into the temple treasury and Jesus says she gave more than all the wealthy donors, because she gave everything she had. Once it is a warning about a debt: you will not get out of prison until you have paid "the very last" one of these coins, meaning down to the final scrap of what you owe. Matthew tells that same warning using the Roman coin name instead, which shows that both writers were simply reaching for "the last penny." This is the only Jewish coin the New Testament names.
Disputed
Whether λεπτόν names a fixed denomination, the Judean half-prutah, or is a general term for whatever the smallest coin in circulation happened to be.
- majorityThe word is not a rigid technical denomination but a general term for the smallest current coin. Its relation to the prutah shifted over time and the two terms are sometimes used interchangeably, so the widow's coins cannot be narrowed beyond "any prutah or half-prutah of the Hasmoneans, the Herods, or the prefects of Judaea." The same looseness marks the rabbinic treatment of the perutah, which the Mishnah (Kiddushin) fixes at an eighth of an Italian issar while the tradition associated with Rav Yosef treats it as simply whatever the smallest current coin is.; David Hendin, Guide to Biblical Coins; LSJ, s.v. λεπτός
- minorityThe word designates a specific Judean bronze denomination, the half-prutah, worth half of the prutah, so that the widow's two lepta make one prutah and one quadrans.; Ya'akov Meshorer, A Treasury of Jewish Coins from the Persian Period to Bar Kokhba; Abbott-Smith, A Manual Greek Lexicon of the New Testament, s.v. λεπτός