You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: BIBLICAL TIMES 
Clue: Vipers & Whited Sepulchers were Jesus' terms for this group, whose name comes from a word for "separatist"
pharisees