A vast number: but it hath been oft observed and recorded by sacred and profane historians, that in those ancient times there were very numerous armies, and ofttimes very great slaughters; and if this slaughter was more than ordinary, there is nothing strange nor incredible, because the Almighty God fought against the Israelites.
Related Commentaries of 2 Chronicles 13:17
2 Chronicles 13:17
17 And Abijah and his people slew them with a great slaughter: so there fell down slain of Israel five hundred thousand chosen men.