iti kshetram tatha jnanam
jneyam coktam samasatah
mad-bhakta etad vijnaya

"Thus the field of activities [the body], knowledge and the knowable have been summarily described by Me. Only My devotees can understand this thoroughly and thus attain to My nature."

Mad bhava = My [Sri Krishna's] nature, upapadyate = tries to attain, mad-bhakta = My [Sri Krishna's] devotee. The Lord says that His devotee attains His state. The Lord is Paramatma and the Most Supreme God. The devotee does not reach that state nor he becomes Paramatma. The devotee will attain that state of the Lord, of total detachment from samsaram; no longer the devotee will have birth-death cycle, an effect of past karma. This is what the Lord has been lecturing in the past 17 slokas. Iti = thus [as told in the last 17 slokas], kshetram = body [as told in slokas 5 and 6], thatha gyanam = and [then] Gyana [about attaining atman told in slokas 7 to 11, that is the 20 qualities to be acquired], jneyam = matter to be understood [atman, told in slokas 12 to 17] by Gyana. We have understood that atman is free from sorrow and happiness, residing in a body due to past karma, unaffected by satva-rajo-tamo qualities, much superior to all matters, etc. So body, the means to attain atman and atman were all told by the Lord. Etad = all these [about body, atman and means], vijnaya = having understood, His devotees try to reach His nature of free from samsaram. It may appear to us that this sloka is about those wanting to be like God. But actually it is not so. Here atman sakshatkaram is intended to be the target. That is the result and it is implied by the word Gyeyam. For this result, one does Bhakti or devotion. Is it not that one did Bhakti to attain Him? We should remember some aspects mentioned in Chapters 7,8 and 9. There He mentioned Four categories of devotees: those who desire wealth, those who desire kaivalyam and those who desire to be with Him forever. Considering these, all these devotees want to have atman sakshatkaram. But after Bhakti, if they desire to have kaivalyam or wealth, the Lord grants them, though they will lower their impressions in the Lord. This sloka deals with atman sakshatkaram alone. By attaining the state of the Lord means they avoid birth cycles and suffereings in samsaram. Attaining atman is also like the Lord having no contacts with samsaram. An atman reaching Vaikuntam and an atman having kaivalyam, have the same state that they do not have any more contacts with samsaram and are free from rebirths. This is the same state as the Lord's. Bhaddha atman has to have rebirths and suffer in this samsaram. But Mukta atman do not have this. Mukta atman are of Two types: One, attains liberation or Mukti and remains in Vaikuntam for ever serving the Lord; the other, after liberation enjoys one's own atman and remains, without going to Vaikuntam and without any more entry into samsaram. The latter is Kaivalyam and is considered inferior to reaching Vaikuntam. Here also atman is like Paramatma's nature, in the sense that this atman also does not have rebirths. We will worship Sri Pacchai Varana Perumal and Sri Amrutavalli Thayar and get their blessings.