### Core Meaning & Semantic Range
The Greek word **sídēros**, represented by `{{G4604}}`, is the term for **iron**. It is a specific and uncommon term in the biblical text, appearing just **1 time** in **1 unique verse**. Its sole usage places it within a list of materials, identifying it as a commodity of trade.
### Biblical Occurrences & Contextual Analysis
The single biblical occurrence of `{{G4604}}` is in the description of Babylon's fall. In [[Revelation 18:12]], **iron** is listed as part of the "merchandise" of the great city. It appears alongside other valuable metals and materials such as gold, silver, brass, and precious stones. This context establishes **iron** as a significant component of worldly commerce and material wealth during that time.
### Related Words & Concepts
Several related words appear alongside `{{G4604}}` in its only context, illustrating the types of valuable goods associated with it:
* `{{G5557}}` **chrysós** (gold): This metal is listed first in the inventory of Babylon's merchandise, signifying great value [[Revelation 18:12]]. It is often contrasted with things of greater, spiritual worth [[1 Peter 1:7]].
* `{{G696}}` **árgyros** (silver): Paired with gold, **silver** represents another form of worldly wealth and a key trade commodity that is subject to corruption ([[James 5:3]], [[Revelation 18:12]]).
* `{{G5475}}` **chalkós** (brass): Defined as copper or brass, this metal is also part of the merchandise of Babylon, listed just before **iron** [[Revelation 18:12]]. It can also simply mean money [[Mark 12:41]].
* `{{G5093}}` **tímios** (precious): This term, meaning valuable or honored, is used to describe the stones and wood in the same list, emphasizing the high cost and desirability of the cargo being traded [[Revelation 18:12]].
### Theological Significance
The theological weight of `{{G4604}}` is derived entirely from its singular context within the judgment of Babylon.
* **Symbol of Earthly Commerce:** The inclusion of **iron** in the list of Babylon's goods solidifies its role as a symbol of the vast, material-focused economy of the world system [[Revelation 18:12]].
* **Association with Worldly Value:** Positioned with gold, silver, and precious stones, **iron** is characterized as a material that worldly systems value. This entire category of wealth is shown to be fleeting in the face of divine judgment.
* **Contrast to Spiritual Riches:** The catalogue of earthly treasures, including **iron**, stands in stark contrast to the "precious" things of God, such as faith [[1 Peter 1:7]], the blood of Christ [[1 Peter 1:19]], and divine promises [[2 Peter 1:4]].
### Summary
In summary, `{{G4604}}` **sídēros** is a straightforward term for **iron**. Its biblical significance is entirely shaped by its single appearance in [[Revelation 18:12]]. It functions as an example of the material goods that constitute the wealth of the worldly system of Babylon. While not as prized as gold or silver, its inclusion demonstrates the comprehensive nature of the world's commerce, all of which is ultimately subject to divine judgment.