The trouble with time travel (how could there be more than one?) is that, upon arrival, you must be able to converse. Zac and Sky speak only English and a bit of French. Their travels are generally restricted to those places in which inhabitants speak these languages. And, the further back in time they travel, the less recognizable these languages will be.
Alim, with his family background, was able to provide an exception, teaching the guys Aramaic.
Aramaic, an ancient language of the Middle East, is still spoken by some, mostly Jews and Christians, in parts of Palestine, Syria and Lebanon. It was the common language of Jesus’ time in the Middle East. Jesus – or Yeshu as he would have been called – spoke Aramaic.
Aramaic is written from right to left, with all the letters representing consonants. Virtually all modern Middle Eastern writing systems and many Asian systems can be traced to it. Aramaic itself has different dialects – like Targumic and Syriac – with Jesus speaking the biblical version.
At its apex, Aramaic had spread to become the lingua franca of the Persian empire.