John Gill Commentary Nehemiah 3:31

"After him repaired Malchijah one of the goldsmiths unto the house of the Nethinim, and of the merchants, over against the gate of Hammiphkad, and to the ascent of the corner." — Nehemiah 3:31 (ASV)

After him repaired Malchiah, the goldsmith's son
Or the son of Tzoreph, as some, so called from his business:

unto the place of the Nethinims, and of the merchants ;
he repaired up to the place where these dwelt:

over against the gate Miphkad ;
where some think was an house of visitation or correction; and others, where the sanhedrim sat, tried causes, and exercised justice:

and to the going up of the corner ;
from the east to the north.