'Post' in the Bible

And he wrote the name of king Ahasuerus, and sealed it with the king's ring, and sent letters by post on horseback, riding on swift steeds that were used in the king's service, bred of the stud:

Now my days are swifter than a post: They flee away, they see no good,

One post shall run to meet another, and one messenger to met another, to show the king of Babylon that his city is taken on every quarter:

And there were closed windows to the lodges, and to their posts within the gate round about, and likewise to the arches; and windows were round about inward; and upon each post were palm-trees.

Then he brought me to the porch of the house, and measured each post of the porch, five cubits on this side, and five cubits on that side: and the breadth of the gate was three cubits on this side, and three cubits on that side.

Then went he inward, and measured each post of the entrance, two cubits; and the entrance, six cubits; and the breadth of the entrance, seven cubits.

And the prince shall enter by the way of the porch of the gate without, and shall stand by the post of the gate; and the priests shall prepare his burnt-offering and his peace-offerings, and he shall worship at the threshold of the gate: then he shall go forth; but the gate shall not be shut until the evening.