Bhagavad Gita: Intimately united with Divine [Dhyana-yoga,Text 47 Chapter 6]

Meaning:

And of all yogis, the one with great faith who always abides in Me, thinks of Me within himself, and renders transcendental loving service to Me-he is the most intimately united with Me in yoga and is the highest of all. That is My opinion

*** Anyone who does not render service and neglects his duty unto the primeval Lord, who is the sources of all living entities, will certainly fall down from his constitutional position.