i.e. In the places where they were appointed to stand, and wait, and perform their office, one standing over against another, as it is explained, Nehemiah 12:24, ward over against ward; for the Hebrew word is the same there and here. Others, according to their turns, or courses, of which see 1 Chronicles 25:9.
Related Commentaries of Nehemiah 12:9
Nehemiah 12:9
9 Also Bakbukiah and Unni, their brethren, were over against them in the watches.