Second Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
3:35cumque venisset universa multitudo cibum capere cum David clara adhuc die iuravit David dicens haec faciat mihi Deus et haec addat si ante occasum solis gustavero panem vel aliud quicquam
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.