 Several distinct Coptic dialects are identified, the most prominent of which are "Sahidic", originating in parts of Upper Egypt and "Bohairic", originally from the western Nile Delta in Lower Egypt.Coptic and Demotic are grammatically closely related to Late Egyptian, which was written with Egyptian hieroglyphs.Coptic flourished as a literary language from the 2nd to 13th centuries and its Bohairic dialect continues to be the liturgical language of the Coptic Orthodox Church of Alexandria.