And. Note the Figure of speech Polysyndeton (App-6) in verses: Exodus 25:3-5. Fifteen objects (verses: Exodus 25:3-7),. x 5. All numbers connected with the Tabernacle are multiples of 5. See App-10.
gold, &c. No iron in the tabernacle.
brass. A mixture of copper and zinc was unknown then. Probably copper, or bronze (a mixture of copper and tin).