Arabic language in Islam
As most Muslim scholars cite the hadith of the Islamic Prophet Muhammad as saying that every letter of the Qur'an brings ten unit of piety (Sawab). That's why, they encourage to pronounce original Islamic Arabic word "Allah" (ﷲ),,Nabi" (نبي), "Rasul" (رسول), "Malaika" (ملاءكة‎)"jannah" (جنّة‎), "jahannam  " (جهنم‎) etc., as an argument they say, the word Allah is used in the Qur'an, so when saying the word, ten unit of sawab or neki will be obtained, which cannot be gotten by the pronunciation of Khuda, Creator, Ishwara, God, payambar, Farishta, Behesht, Dujokh or other non-Quranic and non-Arabic synonyms.