Jeremiah 51:31

post lit. runner. The word survives in this sense in modern English only in the expression post-haste. For the sense here cp.

"Your native town you entered like a post."

Coriolanus, Act v sc. 5.

First denoting that which is placed (positum), it came to denote a fixed spot, e.g. a military post, or a place where horses are kept for travellers, then the person so travelling, and then any one travelling quickly. See Bible Word Book.

shall run to meet another Bearing the tidings from opposite quarters, they shall meet at the king's castle in the heart of the city.

on every quarter See on Jeremiah 50:26.