Text 1 

sri-bhagavan uvaca
param bhuyah pravaksyami
jnananam jnanam uttamam
yaj jnatva munayah sarve
param siddhim ito gatah 

Translation

The Supreme Personality of Godhead said: Again I shall declare to you this supreme wisdom, the best of all knowledge, knowing which all the sages have attained the supreme perfection. 

Commentary by Srila Prabhupada 

From the Seventh Chapter to the end of the Twelfth Chapter, Sri Krishna in detail reveals the Absolute Truth, the Supreme Personality of Godhead. Now, the Lord Himself is further enlightening Arjuna. If one understands this chapter through the process of philosophical speculation, he will come to an understanding of devotional service. In the Thirteenth Chapter, it was clearly explained that by humbly developing knowledge one may possibly be freed from material entanglement. It has also been explained that it is due to association with the modes of nature that the living entity is entangled in this material world. Now, in this chapter, the Supreme Personality explains what those modes of nature are, how they act, how they bind and how they give liberation. The knowledge explained in this chapter is proclaimed by the Supreme Lord to be superior to the knowledge given so far in other chapters. By understanding this knowledge, various great sages attained perfection and transferred to the spiritual world. The Lord now explains the same knowledge in a better way. This knowledge is far, far superior to all other processes of knowledge thus far explained, and knowing this many attained perfection. Thus it is expected that one who understands this Fourteenth Chapter will attain perfection.

Commentary by Sri Visvanatha Cakravarti Thakur

In the fourteenth chapter, the bondage caused by the gunas and the symptoms are described. The many symptoms of the disappearance of the gunas, and the cause of disappearance, bhakti, is also described.

In the previous chapter it was described that the contact of the jiva with the body made of gunas is the cause of his taking repeated births: karanam guna-sango 'sya sad-asad-yoni-janmasu. What types of results come from contact with the gunas? What are the symptoms of those associated with the gunas? How is one liberated from the gunas? In anticipation of these questions, the Lord promises to speak about the above topics while praising them. Knowledge here means teachings by which one gains knowledge.

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Set includes 10 audio CDs (7 CDs of sanskrit chants, 2 CDs containing english translations for the entire Bhagavad Gita, and 1 CD providing an introductory lecture on the Bhagavad Gita by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada).