John Gill Commentary 2 Chronicles 13:16

"And the children of Israel fled before Judah; and God delivered them into their hand." — 2 Chronicles 13:16 (ASV)

And the children of Israel fled before Judah
Were in such a fright and consternation, that they could not stand their ground, or engage at all; but took to flight immediately:

and God delivered them into their hand ;
to be taken and slain by them.