Then Zedekiah the king sent, and took Jeremiah the prophet unto him into the third entrance that is in the house of the LORD: and the king said unto Jeremiah, I will ask of you a thing; hide nothing from me.
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George Leo Haydock
Third, or officers of the guard's gate, leading from the palace to the temple, 4 Kings xi. 19. (Calmet)
Hebrew hashelishi; (Haydock) the third denotes also an officer of the army.