'Pillar' in the Bible

And you, son of man, have two ways marked out, so that the sword of the king of Babylon may come; let the two of them come out of one land: and let there be a pillar at the top of the road:

Put a pillar at the top of the road for the sword to come to Rabbah in the land of the children of Ammon, and to Judah and to Jerusalem in the middle of her.

By putting their doorstep by my doorstep, and the pillar of their door by the pillar of my door, with only a wall between me and them; and they have made my holy name unclean by the disgusting things which they have done: so in my wrath I sent destruction on them.

And the ruler is to go in through the covered way of the outer doorway outside, and take his place by the pillar of the doorway, and the priests will make his burned offering and his peace-offerings and he will give worship at the doorstep of the doorway; then he will go out, and the door will not be shut till the evening.