1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
17:49And David put his hand into the bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, and the stone sank into his forehead; and he fell on his face to the earth.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.