Albert Barnes Commentary 2 Samuel 24:17

"And David spake unto Jehovah when he saw the angel that smote the people, and said, Lo, I have sinned, and I have done perversely; but these sheep, what have they done? let thy hand, I pray thee, be against me, and against my father`s house." — 2 Samuel 24:17 (ASV)

Compare the passage in Chronicles. The account here is abridged, and 2 Samuel 24:18 has the appearance of being the original statement.