Brass
Brass and iron as in Isaiah 48:4 and Daniel 7:19 signify what is hard.
In Genesis 4:22, brass signifies natural good. (Arcana Coelestia 421)
In Numbers 21:9, this signifies the Lord's divine natural. (Apocalypse Revealed 49)
Brass also signifies the good in man's natural and the sensuous in the Lord. (Arcana Coelestia 197, Apocalypse Revealed 49, Apocalypse Explained 705)
(Odkazy: Apocalypse Explained 70)
1 Kings 7:43-47
43
and the ten bases, and the ten basins on the bases;
44
and the one sea, and the twelve oxen under the sea;
45
and the pots, and the shovels, and the basins: even all these vessels, which Hiram made for king Solomon, in the house of Yahweh, were of burnished brass.
46
In the plain of the Jordan did the king cast them, in the clay ground between Succoth and Zarethan.
47
Solomon left all the vessels [unweighed], because they were exceeding many: the weight of the brass could not be found out.