First Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
Chapter 15
11paenitet me quod constituerim Saul regem quia dereliquit me et verba mea opere non implevit contristatusque est Samuhel et clamavit ad Dominum tota nocte
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.