Navot Akiva Dept. of Computer Science Bar-Ilan University Ramat Gan, Israel {moishk,}@ Idan Dershowitz Dept. of Bible Hebrew University Jerusalem, Israel dershowitz@ We propose a novel unsupervised method for separating out distinct authorial components of a document. In particular, we show that, given a book artificially “munged” from two thematically similar biblical books, we can separate out the two constituent books almost perfectly.