The recital, hearing and study of the Vedas and our Sampradaaya Granthas (texts) purify the soul.

Smrithis quote SriBhaashyam  (the meaning of Brahmasootras) to be eighty times more potent than the difficult ways like Krucchra, Atikrucchra etc mentioned in the Vedas for Praayaschittah (atonement of our sins)! 

Swami Raamaanuja himself says that alphabets of his SriBhaashyam have been taken from Gaayathri – the essence of the Vedas. He says Sribhashyam has the power to protect all in this world.

Also periodic recitation of Vedas and Sampradaaya texts is the only way to preserve and protect them.