John Gill Commentary 1 Chronicles 12:9

"Ezer the chief, Obadiah the second, Eliab the third," — 1 Chronicles 12:9 (ASV)

Ver. 9-13.

Ezer the first
This, and those that follow, are the names of the Gadites given, according to their age, or merit, or order in coming to David: Obadiah, Eliab, Mishmannah, Jeremiah, Attai, Eliel, Johanan, Elzabad, Jeremiah, Machbanai; in all eleven.