Linguistic studies show that pronunciation is one of the most difficult aspects of learning a second language. Some theoretical approaches popular in linguistics, such as the critical age hypothesis, make it impossible to learn this aspect of language after puberty. The results showed that the later methods of second language teaching makes learning absolute accurate pronunciation impossible after the critical period; they, they are emphasizing upon other criteria such as comprehensibility and meaningfulness. The findings also indicate that the approach of Shiite jurists in issuing accurate pronunciation verdict is very subtle in the areas of phonology and semantics consistent with linguistics, but at the same time it is non-rigid and achievable. Finally, by exploring the major factors in the difficulty of pronunciation, strategies from the perspective of religion and linguistics to facilitate pronunciation learning are presented.