Video from Sam Aronow
"Part 2 of a series on Jewish History! As the Kingdoms of Israel and Judah sprang forth from the ruins of the Bronze Age, their fate lay in their chosen weapons." from video introduction.
"Six metals were commonly used in the Bronze and Iron ages. All of these are mentioned in the story of Israel’s war against the Midianites in Numbers. After the Israelites win the war, they take a large amount of booty, including metals, which need to be purified:
במדבר לא:כב אַךְ אֶת הַזָּהָב וְאֶת הַכָּסֶף אֶת הַנְּחֹשֶׁת אֶת הַבַּרְזֶל אֶתהַבְּדִיל וְאֶת הָעֹפָרֶת. לא:כג כָּל דָּבָר אֲשֶׁר יָבֹא בָאֵשׁ תַּעֲבִירוּ בָאֵשׁ וְטָהֵר...Num 31:22 Gold and silver, copper, iron, tin, and lead— 31:23 any article that can withstand fire—these you shall pass through fire and they shall be clean
This booty list aligns with the biblical tradition that associates the origins of metallurgy with the proto-Arabian peoples such as the Midianites. A different proto-Arabian tribe, the Kenites, occupies the central role in these traditions. Specifically, one of the Kenite ancestors, Tubal-Cain, in an account of the earliest period of human history, is described as the inventor of metallurgy: from the article: The History of Iron in Ancient Israel