σίδηρος

iron

Definition

The Greek word σίδηρος refers to the metal iron. In the biblical world, iron was known for its strength and durability, used for tools, weapons, and construction. Its primary symbolic meaning in scripture is associated with hardness, unyielding strength, and judgment. In its single New Testament occurrence in Revelation 18:12, it is listed among the valuable cargo of Babylon the Great, representing a material commodity of the fallen world system. While not elaborated in the NT, the Old Testament frequently uses iron metaphorically, such as an 'iron furnace' for affliction (Deuteronomy 4:20) or an 'iron yoke' for oppressive rule (Deuteronomy 28:48).

Biblical Usage

In the New Testament, σίδηρος is used only once, in Revelation 18:12. Here, it appears in a list of luxury goods—'cargo of gold, silver, precious stones, pearls, fine linen, purple, silk, scarlet, all kinds of scented wood, all kinds of articles of ivory, all kinds of articles of costly wood, bronze, iron, and marble'—that will no longer be traded after the fall of Babylon. This usage is purely material, denoting iron as a valuable trade commodity within the corrupt economic system that is judged.

Etymology

The word σίδηρος is of ancient Greek origin, with no certain derivation from another Indo-European root. It is the standard term for iron in classical and Koine Greek. Cognates appear in other languages, such as Latin 'ferrum'. Its meaning remained consistent, referring directly to the metal itself.

Semantic Range

While σίδηρος itself is not a theologically loaded term in its sole NT use, its inclusion in Revelation 18:12 contributes to the theme of worldly wealth and commerce being utterly transient and subject to God's judgment. Understanding it as a valuable commodity of the ancient world underscores the completeness of the economic collapse described. The Old Testament's metaphorical uses of iron for hardship (e.g., Deuteronomy 28:48) and God's sovereign rule (e.g., Psalm 2:9, 'You shall break them with a rod of iron') provide a richer symbolic background for the metal's association with strength and severity, which informs a fuller biblical understanding.

In the first-century Greco-Roman world, iron was a crucial metal for everyday life, warfare, and construction. It was more common and less valuable than precious metals like gold and silver but essential for tools, weapons (swords, spear points), nails, and structural elements. Its inclusion in a list of luxury goods in Revelation 18:12 likely refers to worked iron or high-quality metal as a trade commodity, reflecting its economic importance. Its symbolic association with strength, hardness, and durability was nearly universal in the ancient Near East and Mediterranean.

χαλκός (chalkos, G5475) — copper or bronze; a softer, more malleable metal often used for currency and utensils. σίκερα (sikera, G4608) — No relation; this is a different word meaning 'strong drink'.

Word Details

Scripture References