'Pillar' in the Bible

And I, behold, I appoint thee this day as a strong city, and an iron pillar, and brazen walls, against the whole land; against the kings of Judah, against its princes, against its priests, and against the people of the land.

And as to the pillars: the height of one pillar was eighteen cubits, and a line of twelve cubits encompassed it; and the thickness thereof was four fingers: it was hollow.

And the capital upon it was brass, and the height of the one capital was five cubits; and the network and the pomegranates, upon the capital round about, all of brass; and similarly for the second pillar, and the pomegranates.