More than half of the world population think that God exists or not but one thing they know may be that is that the God will only live in those who do good karma always be positive and help others at any cost. Indian is the only country in the world where God comes on the earth. And also the devotees of God beleaves in god's fun. If we do good karma and always positive thinking then we also beat the death.
Lord Krishna said that Shri Mad Bhagwat Geeta is the one book in the world where All answers of the human life and above questions exist. This book can learn you how to live.