So the field, knowledge, and what is to be known have been described briefly. My devotee, understanding this, becomes fit for my state of being.
Explanation
Krishna wraps up his short account of the field (kṣetra, the body and its makeup), knowledge (jñāna), and the knowable (jñeya, the highest reality). He says a devotee (bhakta) who truly understands these is ready to share in his nature (mad-bhāva). Traditions differ on what this means: some read it as oneness with the Supreme, others as a loving closeness to Krishna that stays distinct.