Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 18
23Now therefore come over to my master, the king of the Assyrians, and I will give you two thousand horses, and see whether you be able to have riders for them.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.