'Posts' in the Bible

The priests stood at their posts [ready for service], and the Levites also, with the musical instruments of the Lord which King David had made to praise the Lord, saying, “For His lovingkindness and mercy endure forever,” whenever David offered praise through their ministry. The priests were opposite the Levites blowing the trumpets and all Israel was standing.

So the runners went throughout Israel and Judah with the letters from the hand of the king and his officials, in accordance with the command of the king, saying, “O sons (descendants) of Israel, return to the Lord God of Abraham, Isaac, and Israel (Jacob), so that He will return to those of you who escaped and are left from the hand (power) of the kings of Assyria.

So the runners (couriers) passed from city to city through the country of Ephraim and Manasseh, as far as Zebulun; but the people laughed at them with scorn and mocked them.