Now Jeroboam had sent some men to ambush the Judahite army from behind. ¹  The main army was in front of the Judahite army; ²  the ambushers were behind it.

The events of Rehoboam’s reign, from start to finish, are recorded ¹  in the Annals of Shemaiah the prophet and of Iddo the seer that include genealogical records.

Abijah launched the attack with 400,000 well-trained warriors, ¹  while Jeroboam deployed against him 800,000 well-trained warriors. ²