1 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
2:39And it came to pass at the end of three years, that two servants of Shimei's ran away to Achish son of Maachah, king of Gath. And they told Shimei saying, Behold, thy servants are in Gath.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.