2 Samuel 23:39

Uriah the Hittite: thirty and seven in all, namely, Joab as the commander-in-chief, three heroes of the first degree, three heroes of the second degree, and the thirty knights of David. As the names of these faithful followers of David were here entered into the catalog of heroes, so the names of the true servants of Christ are entered into the book of life, to be read on the last day, when all such men will receive the reward of mercy.