2 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
Chapter 14
9And there came out against them Zerah the Ethiopian with an host of a thousand thousand, and three hundred chariots; and came unto Mareshah.10Then Asa went out against him, and they set the battle in array in the valley of Zephathah at Mareshah.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.