Original sentence: Rejecting the establishment consensus that the Dead Sea scrolls were the work of a marginal Jewish apocalyptic movement, Leigh and Baigent argue that instead the Scrolls were the work of Jewish zealots who had much in common with, and may have been identical to, the early followers of Jesus led his brother James
Edited sentence: Rejecting the establishment consensus that the Dead Sea scrolls were the work of a marginal Jewish apocalyptic movement, Leigh and Baigent argue that instead the Scrolls were the work of Jewish zealots who had much in common with, and may have been identical with, the early followers of Jesus <there's something wrong with this sentence> led his brother James