New Defender's Study Bible Notes
13:3 mixed multitude. The “mixed multitude” (see Exodus 12:38) consisted of descendants of mixed marriages between the children of Israel and those from other nations. Those in the original mixed multitude (from Egypt or Edom) were accepted in the family of Israel after the third generation (Deuteronomy 23:7,8). However, those from such marriages with Moabites and Ammonites (Tobiah was an Ammonite) had been precluded from acceptance until the tenth generation (note Nehemiah 2:19; Deuteronomy 23:3).