Psalms (Author Moses, David, Solomon, Asaph, Heman, Ethan, sons of Korah, compiled by Ezra)
51:4Against Thee, Thee only, I have sinned, And done the evil thing in Thine eyes, So that Thou art righteous in Thy words, Thou art pure in Thy judging.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.