The Supersoul, the Supreme Personality of Godhead, is the source of light.
Bhagavad Gita 13.18,
Faith means… unflinching trust in something sublime.
Bhagavad Gita 2.41,
Wherever there is Krishna the master of all mystics, and wherever there is Arjuna, the supreme archer, there will also certainly be opulence, victory, extraordinary power, and morality.
Bhagavad Gita 18.78
Ignorant and faithless persons who doubt the revealed scriptures do not attain God consciousness; they fall down. For the doubting soul there is happiness neither in this world nor in the next.
By all the Vedas, I am to be known. Indeed, I am the compiler of Vedanta, and I am the knower of the Vedas.
Bhagavad Gita 15.15
Srimad Bhaagavatam also affirms that one should follow in the footsteps of great devotees and that is the way of progress on the path of spiritual realization. The king or the executive head of a state, the father and the school teacher are all considered to be natural leaders of the innocent people in general. All such natural leaders have a great responsibility to their dependents. Therefore, they must be conversant with standard books of moral and spiritual codes.