Ophel, the southern spur of the temple hill, having a wall of its own Nehemiah 3:27 might be reckoned either in Jerusalem or outside it. Here it is made a separate place.

But the Nethinims dwelt in Ophel,.... An high place or tower on the wall of Jerusalem, see 2-Chronicles 27:3,
and Ziha, and Gispa, were over the Nethinims; had the oversight of them, and took care that they did their work; they were such themselves, but the principal of them, see Ezra 2:43.

The Nethinim dwelt in Ophel, the southern slope of Mount Moriah; see rem. on Nehemiah 3:26. Their chiefs were Zihah and Gispa. ציחה occurs Ezra 2:43, followed by חשׂוּפא, as head of a division of Levites; whence Bertheau tries, but unsuccessfully, to identify the latter name with גּשׁפּא. For it does not follow that, because a division of Nethinim was descended from Hasupha, that Gishpa, one of the chiefs of those Nethinim who dwelt on Ophel, must be the same individual as this Hasupha.

The Nethinims dwelt in Ophel - Which was upon the wall of Jerusalem, because they were to do the servile work of the temple: therefore they were to be posted near it, that they might be ready to attend.