Guttural R
Many Jewish immigrants to Israel spoke a variety of Arabic in their countries of origin and pronounced the Hebrew rhotic as an alveolar tap , similar to Arabic '. Gradually, many of them began pronouncing their Hebrew rhotic as a voiced uvular fricative , a sound similar or (depending on the Arabic dialect) identical to Arabic '. However, in modern Sephardic and Mizrahi poetry and folk music an alveolar rhotic continues to be used.
Bible translations into Arabic
Translations of the Bible into Arabic are known from the early Christian churches in Syria, Egypt, Malta and Spain. Some of these translations are from Syriac (the Peshitta), Coptic or Latin. The earliest fragment of the Old Testament in Arabic is a text of Psalm 77, found in the Umayyad Mosque, dating from the 8th century. 
One of the oldest Arabic bibles was discovered in the 19th century at Saint Catherine's Monastery. The manuscript called Mt. Sinai Arabic Codex 151, was created in AD 867. It includes the biblical text, marginal comments, lectionary notes, and glosses, as found in the manuscript. Most Arabic translations have translated Yahweh (יהוה), the Hebrew name of God (LORD or Jehovah in English / Kyrios in Greek), as Allāh or Ar-rabb ( or , respectively). These are similar to the appellations utilized by Muslims in Classical Arabic, but the term Ar-rabb is quite distinct from Muslim usage, which normally does not use the definite article, instead predominantly making use of a vocative without an article or affixed possessive pronoun. The Aramaic Mār / Mōr (teacher or lord) is translated as Rabb or Sayyid ( or , respectively). There are many cases where an etymological root exists between an Arabic word and the original Hebrew or Aramaic text, yet it is translated into a colloquial or a commonly used word instead.
There are many New Testament translations or portions into regional colloquial forms of Arabic e.g. Egyptian Arabic, Sudanese Arabic, Palestinian Arabic, Moroccan Arabic and Chadian Arabic etc.