The Blogs: From Jerusalem to Jericho, Did Gold Classify Water Quality in the Copper Scroll?

Image: Water from the Gihon Spring flowing through Jerusalem’s Siloam Tunnel: Did the term “gold” in the Copper Scroll designate clear, high-quality water? In the modern cultural background, one may also hear an echo of the phrase “Jerusalem of gold, of copper, and of light.” Source: Wikipedia.

From “Waters of Gold” to a Water Registry: The Linguistic Sources of the Copper Scroll

The use of “gold” as a metaphor for exceptional quality, purity, and supreme value is familiar in modern Hebrew expressions such as “the golden age,” “golden hands,” and “a person of gold.” Yet the roots of this usage are far older, appearing already in the Hebrew Bible and rabbinic literature.

The hydraulic interpretation of the Copper Scroll—which views the text as a survey of water installations and regional infrastructure—sometimes encounters the objection that interpreting “gold” and “silver” as classifications of water is an artificial modern allegory. The ancient sources do not prove by themselves that these words carried a technical meaning in the Scroll. They do show, however, that using the names of metals to express different degrees of quality, purity, and value was natural and deeply rooted in the linguistic world in which the Scroll was composed.

In the Hebrew Bible, gold signifies more than material wealth. It also serves as an image of purity that withstands testing: “When He has tested me, I shall come forth as gold” (Job 23:10). Similarly: “The crucible is for silver and the furnace for gold, but the Lord tests the heart” (Proverbs 17:3).

The Torah and wisdom are described through comparisons with the finest gold: “More desirable than gold, even much fine gold” (Psalms 19:11), and “The teaching of Your mouth is better to me than thousands of gold and silver” (Psalms 119:72). Conversely, a decline in quality is expressed through the dimming of gold: “How the gold has grown dim, how the finest gold has changed” (Lamentations 4:1).

The midrash Exodus Rabbah likewise states that the world was not worthy of using gold, and that it was created for the Tabernacle and the Temple.

Gold therefore functioned as a symbol of the highest and most sacred degree—not merely as a material of monetary value.

A particularly intriguing linguistic example appears in the biblical name Me-Zahab: “Mehetabel, daughter of Matred, daughter of Me-Zahab” (Genesis 36:39). This is a personal or geographical name whose generally accepted literal meaning is “waters of gold” or “golden waters.”

This does not prove that the expression was a fixed engineering term. Its very existence, however, shows that an association between water and gold was possible and intelligible in the ancient Semitic world. In the desert environment of Edom, from which the name originated, a stable source of high-quality water would itself have been a resource worth its weight in gold.

This point allows us to reconsider the use of “gold” in the Copper Scroll.

In previous articles, we have shown that the sections mentioning gold can repeatedly be associated with sources of clear springwater, while the recorded quantities correspond to the approximate discharge rates and storage capacities of the proposed sites. This pattern appears in Jerusalem, around the Gihon Spring and the Pool of Siloam; in Jericho and the Jordan Valley, where extensive spring-fed water-conveyance systems operated; and at Ramat Rachel, where a large runoff-regulation and storage system—classified as “silver” under the proposed interpretation—has recently been discovered.

By contrast, in sections mentioning silver, or in which gold is not explicitly named, the proposed identifications generally concern runoff, floodwater, or water collected in reservoirs and behind dams.

At present, we possess no direct biblical parallel to the expression “waters of silver.” The interpretation of silver as a lower or more variable category of water therefore does not rest on an independent etymology. It emerges instead from a recurring internal pattern within the Scroll: the type of water source, the structure of the installation, the topography, and the quantities recorded.

According to the proposed model, “gold” may have served as a classification key for clear springwater of high drinking quality, while “silver” may have designated water of more variable quality—runoff, floodwater, or stored water.

The numbers and multiplications accompanying these terms need not necessarily represent imaginary quantities of precious metals. They may instead record quantitative information relating to water discharge, storage capacity, or administrative units of measurement.

The linguistic evidence does not stand alone, nor does it by itself prove the hydraulic interpretation. Its importance lies in the way it complements the structural, quantitative, topographical, and archaeological correspondences presented in the previous articles.

Taken together, these correspondences strengthen the possibility that the Copper Scroll was not merely a list of hidden treasures. It may also have served as a survey and administrative registry of water infrastructure—the most strategically important technology of ancient Judea.