How Bhagavatam Puraan helped a Ghost?

Why must we read the Scriptures and Sacred Texts like Gita and Bhagavatam? What is so important about them? Here is a story of 2 Brothers, one of whom was a saint and the other was the extreme opposite of a saint, and how the former helped the latter escape a hellish afterlife and eventually be liberated, with the help of a Sacred Sanaatan Scripture.