1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
Chapter 19
9And the children of Ammon came out, and put the battle in array before the gate of the city: and the kings that were come were by themselves in the field.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.