Text 3.1
Nature the Emover and Consciousness
691
undergoes so many changes of body and yet is still one person, remaining. Thus there is a difference between the knower of the field of activities and the actual field of activities. A living conditioned soul can thus understand that he is different from the body. It is described in the beginning— dehe'smin —that the living entity is within the body and that the body is changing from childhood to boyhood and from boyhood to youth and from youth to old age, and the person who owns the body knows that the body is changing. The owner is distinctly  kṣetrajña . Sometimes we understand that I am happy, I am mad, I am a woman, I am a dog, I am a cat: these are the knowers. The knower is different from the field. Although we use many articles—our clothes, etc.—we know that we are different from the things used. Similarly, we also understand by a little contemplation that we are different from the body.
In the first six chapters of  Bhagavad-gītā , the knower of the body, the living entity, and the position by which he can understand the Supreme Lord are described. In the middle six chapters of the  Gītā , the Supreme Personality of Godhead and the relationship between the individual soul and the Supersoul in regard to devotional service are described. The superior position of the Supreme Personality of Godhead and the subordinate position of the individual soul are definitely defined in these chapters. The living entities are subordinate under all circumstances, but in their forgetfulness they are suffering. When enlightened by pious activities, they approach the Supreme Lord in different capacities—as the distressed, those in want of money, the inquisitive, and those in search of knowledge. That is also described. Now, starting with the Thirteenth Chapter, how the living entity comes into contact with material nature, how he is delivered by the Supreme Lord through the different methods of fruitive activities, cultivation of knowledge, and the discharge of devotional service are explained. Although the living entity is completely different from the material body, he somehow becomes related. This also is explained.
TEXT 3
क्षेत्रज्ञं चापि मां विद्धि सर्वक्षेत्रेषु भारत । 
क्षेत्रक्षेत्रज्ञयोर्ज्ञानं यत्तज्ज्ञानं मतं मम ॥ ३ ॥
kşetrajñam cāpi mām viddhi sarva-kşetreşu bhārata kşetra-kşetrajñayor jñānam yat taj jñānam matam mama