2 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
Chapter 16
23And the counsel of Ahithophel which he counselled in those days is as when one inquireth at the word of God; so is all the counsel of Ahithophel both to David and to Absalom.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.