Scriptures, which they studied, copied, and preserved for posterity. Judging by the numbers of copies that have been preserved, Isaiah, Psalms, and Deuteronomy held special importance for them. Another source of spiritual guidance consisted of extrabiblical sectarian documents that governed life and conduct within this separatistic community, such as the Community Rule. These writings served to clarify and supplement the biblical writings. Members of the community also looked to their Teacher of