'Pillar' in the Bible

For see, this day have I made you a walled town, and an iron pillar, and walls of brass, against all the land, against the kings of Judah, against its captains, against its priests, and against the people of the land.

It is like a pillar in a garden of plants, and has no voice: it has to be lifted, for it has no power of walking. Have no fear of it; for it has no power of doing evil and it is not able to do any good.

Put up a pillar for Moab, for she will come to a complete end: and her towns will become a waste, without anyone living in them.

And as for the pillars, one pillar was eighteen cubits high, and twelve cubits measured all round, and it was as thick as a man's hand: it was hollow.

And there was a crown of brass on it: the crown was five cubits high, circled with a network and apples all of brass; and the second pillar had the same.