2 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
Chapter 24
18And Gad came that day to David, and said unto him, Go up, rear an altar unto the LORD in the threshingfloor of Araunah the Jebusite.19And David, according to the saying of Gad, went up as the LORD commanded.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.