King David, who was a shepherd in his youth, became King of Israel and ruled from 1090-970 BCE. He is most famous for playing the harp while worshiping God and for killing the Philistine giant, Goliath, with a slingshot and a rock
Shimush Tehillim Sefer Shimush Tehillim is a short and relatively little-known treatise attributed to Rav Hai Gaon [according to the Sedei Chemed] which describes the Kabbalistic uses of particular chapters and verses from the Book of Psalms for prophylactic or healing purposes. These selections are meant to be either recited alone, frequently multiple times or in conjunction with some other action or prayer. Shimush Tehillim is mentioned in Teshuvas HaRashba, by the Chida, and others. This work is not to be confused with bibliomancy which is the use of Biblical verses for predicting the future.