In the Bhagavad Gita (a Hindu text from the fifth to second century BC), Krishna, a divine guide to Arjuna the warrior, describes helping others spiritually as an essential practice in order to reach “salvation.” He states:
“Give thy mind to me, and give me thy heart, and thy sacrifice, and thy adoration. This is my Word of promise: thou shalt in truth come to me, for thou art dear to me.
Leave all things behind, and come to me for thy salvation. I will make thee free from the bondage of sins. Fear no more.
These things must never be spoken to one who lacks self-discipline, or who has no love, or who does not want to hear or who argues against me.
But he who will teach this secret doctrine to those who have love for me, and who himself has supreme love, he in truth shall come unto me.
For there can be no man among men who does greater work for me, nor can there be a man on earth who is dearer to me than he is.”
~The Bhagavad Gita, Chapter 18, Verses 65-69.