Sanskrit

Origin: 

Sanskrit is another oldest of the Indian languages, of the Indo-Aryan origin. It is also the sacramental language of the Hindu religion. 

Significance: 

-Mastering Sanskrit language opens doors to job options like teaching and instructing in India and among the overseas Indian population. 

-If you are to take up jobs in the research of the Hindu religion and Vedic Civilization, then Sanskrit is your key.