2 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
24:10And David's heart smote him after he had numbered the people. And David said to Jehovah, I have sinned greatly in what I have done; and now, I beseech thee, Jehovah, put away the iniquity of thy servant; for I have done very foolishly.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.