There are 12 dialects of Aramaic and there are only three people in the world that know all these 12 dialects. One is a believer that is a Scholar in residence at Northwestern College in Roseville MN (a non-denominational Evangelical Christian College), Dr. Michael Wise, and the other two are located in Ohio and at Harvard. The Aramaic in the movie Passion of Christ was not the Aramaic of Jesus time but the Aramaic of the Talmud (many words are the same but not always). It is very close but not quite the Aramaic dialect of Jesus time. Dr. Wise has worked with the Dead Sea Scrolls extensively and specializes in intertestmental period.