tin: a cheap metal worth trading because bronze cannot be made without it, and so a stock image for what a refiner burns out of silver
Tin mattered because of what it made. Mixed with copper it gives bronze, so tin was worth carrying a very long way even though there is almost none of it in the lands of the Bible. Two of the six times this word appears, it sits in a plain list of the metals a nation could own, purify, or trade, right beside lead (עֹפֶרֶת). That is the strongest reason we can say the metal is tin: lead is already named as a separate item in the same breath.
But tin was also cheap, and the prophets use it that way. Silver was purified by melting it down and driving off everything that was not silver, so tin is exactly what a refiner does not want in the pot. Isaiah and Ezekiel turn that picture on a people: what was taken for silver is really the common metal, fit only for the fire. English Bibles feel the shift and stop saying "tin" in these verses, choosing "alloy", "impurities", or "slag" instead. It is still one word for one metal, named once for itself and once for what it spoils.
One verse stands apart. In Zechariah 4:10 the word is joined to the word for stone in a phrase found nowhere else in the Hebrew Bible, naming something held up in Zerubbabel's hand while the temple is being rebuilt. Translators ancient and modern have guessed at four different objects:
- a builder's weighted line for checking that a wall is straight
- an inscribed tin plaque of the kind rulers buried in a building's foundations
- a stone that has been set apart or chosen
- the chief stone of the finished building
No one has settled which is right, and careful versions mark the phrase as uncertain.
Nuances
What object the phrase "the stone, the tin" names in Zechariah 4:10.
- contestedA builder's weighted line, that is, a plummet or plumb line, whose appearance in Zerubbabel's hand shows that the temple work is going forward. This is the oldest and most widely followed reading.; D. J. Clark and H. A. Hatton, A Handbook on Zechariah (United Bible Societies, 2002), on 4:10; Septuagint, Zechariah 4:10 (a plummet of tin)
- contestedAn inscribed tin tablet of the sort ancient rulers placed in temple and palace foundation deposits, held by Zerubbabel as the founder of the new temple.; Carol L. Meyers and Eric M. Meyers, Haggai, Zechariah 1-8, Anchor Bible 25B (1987)
- minorityA stone that has been separated out or chosen, reading the word from the verb meaning to separate.; Peshitta, Zechariah 4:10 (the stone called Separation); New English Bible / Revised English Bible, Zechariah 4:10
- minorityA premier or chief stone, linked to the top stone mentioned three verses earlier.; New Jewish Publication Society Tanakh, Zechariah 4:10 (the stone of distinction); New American Bible Revised Edition, Zechariah 4:10 (capstone)