1 Chronicles 6:22-28 -

(B) These verses give descendants, probably twenty-one in number, from Levi, through his second son, Kohath, to Joel, eldest son of Samuel and (verse 33) father of Heman. The descendants of Kohath through his eldest son, Amram, have been given from verses 3-15. But the descendants now to he spoken of are through another son, here called Am-minadab, a name not appearing among the four of verse 2, but apparently standing for the Izhar of that verse. For he is said to have a son Korah, by whom, indeed, the genealogy moves on, while in verses 37, 38. and Numbers 16:1 , Korah is said to be the son of Izhar. Without the occurrence of this clue, we should have been at a loss to tell who Amminadab was, as we are now at a loss to explain the unexplained substitution of this new name. The Vatican Septuagint has Amminadab, while the Alexandrine has altered to Izhar, probably deeming the other name a mere error.