Bhagavad Gita Chapter 13, Verse 3

क्षेत्रज्ञं चापि मां विद्धि सर्वक्षेत्रेषु भारत | क्षेत्रक्षेत्रज्ञयोर्ज्ञानं यत्तज्ज्ञानं मतं मम ||

kṣetrajñaṁ cāpi māṁ viddhi sarva-kṣetreṣu bhārata kṣetra-kṣetrajñayor jñānaṁ yat taj jñānaṁ mataṁ mama

O descendant of Bharata, know Me to be the knower of the field in all fields. The knowledge of the field and the knower of the field—that is what I consider to be knowledge.

Krishna reveals something profound: He is the ultimate knower in all fields. Every individual consciousness (kṣetrajña) is ultimately connected to the Supreme Consciousness. But more importantly, He defines what true knowledge is: understanding the distinction between the field and the knower. This isn't academic knowledge. It's practical wisdom. Most people accumulate information about the world, but they never understand the fundamental distinction between what they experience (the field) and what experiences it (the knower). True knowledge isn't knowing facts about the field. It's knowing the field as separate from the knower. When you understand this distinction, you have real knowledge. Without it, you're just collecting information about the field, never recognizing the knower.