Brown Driver Briggs

 Meshezabeel = "God delivers"
1. ancestor of Meshullam who assisted Nehemiah in rebuilding the wall
of Jerusalem
  1) perhaps the same as 2 and 3
2. a head of the people who sealed the covenant with Nehemiah
  1) perhaps the same as 1 and 3
3. father of Pethahiah and descendant of Zerah the son of Judah
  1) perhaps the same as 1 and 2