the elders. Some codices, with Septuagint, Syriac, and Vulgate, read "all the elders".
and. Some codices, with three early printed editions, Aramaean, and Septuagint, omit "and".
fathers = fathers' houses = families.
children = sons.
out of the city of David: i.e. up out of Zion (the former Jebus, 2Sa_5:6-9) to Moriah, where the Temple had been built (1Ch_21:28, 1Ch_22:1). Compare 2Sa 6. App-68