אַ֥ךְ אֶת־הַזָּהָ֖ב וְאֶת־הַכָּ֑סֶף אֶֽת־הַנְּחֹ֙שֶׁת֙ אֶת־הַבַּרְזֶ֔ל אֶֽת־הַבְּדִ֖יל וְאֶת־הָעֹפָֽרֶת׃
Howbeit the gold, and the silver, the brass, the iron, the tin, and the lead,
Read kabbalistic (mystical) interpretation of Numbers 31:22: and classical mystical sources.