FYI:
I'm an ISKCON devotee, and I know all this knowledge, because in ISKCON, these are what is taught to people.
Answer:
The Bhagavad Gita's importance on Hindu Religion is HOW TO LIVE LIFE. It explains what to do in life, how to pass over mistakes, who we really are, what we need to do in life, who we need to serve in our life. HOW TO GET UNLIMITED, PERMANENT HAPPINESS.
Step-by-step explanation: