Know Me (the supreme Reality) to be the Knower of the Field, in all fields. I consider the knowledge of both kshetra and Kshetrajña as true spiritual wisdom.
Just like any other branch of knowledge, spirituality also has a set of concepts and postulates, like kshetra, Kshetrajna, jnānam and jneyam. Every concept is meant to help the process of understanding. Through it, the seeker gains knowledge and grows, until at last he reaches and gains the final objective, to feel contented and fulfilled. This applies to Arjuna too, a full seeker.
Any activity needs first a ground or field to host it, which consists of a variety of small and big factors. This field, together with the associated factors, will have to be known, studied and applied variously to perform the intended task. Thus comes a sentient presence, capable of thinking and assigning the relevant factors to effect and accomplish the performance.
The ‘Field’ and its ‘Knower’ always go together. As a pair, the two fill the whole Universe.