1 Chronicles 26:17-18 -

These verses give the number of individuals who composed the watch at a time, beginning again from Shelemiah's eastward position. The two and two toward Asuppim suggest most naturally the suppositon of two attendants at each of two gates, or else of two succeeding two. Parbar ( פַרְבָּר ). This word appears as פָּרְוָר in 2 Kings 23:11 . These words, with forms akin to them, are often found in the Targums, but not elsewhere in the Scriptures. The nearest approach to the meaning of the word, as yet discovered, is a "suburb." The connection may just do as much as indicate that, whereas four porters kept the causeway gate, the Parbar gate was in closer proximity to the temple that was to be, but what this Parbar really was is not yet ascertained. Possibly it is the προάστειον of Josephus ('Ant.,' 15. 11.5). If we add the numbers of Levites given in these two verses, it will be noticed that they mount up to twenty-four.