Other faith's holy books for insight?
I will follow manily just my Guru, the Adi Granth and chant Waheguruji, but can I read other faith's holy books for insight to better myself also every once in a while. Like could i read the Vedas every once in a while not just to understand culture but to also better spirituality as a tool, as long as I'm only keeping my Guru Granth Sahib Ji as my true guru and teacher?