Prabhupāda: "Anyone who explains this devotional service, as explained in the Bhagavad-gītā, is guaranteed to come back to Me." That means the preacher of this Bhagavad-gītā is guaranteed to go back to home, back to Godhead. What is the purport?
Devotee: Generally it is advised that Bhagavad-gītā be discussed amongst the devotees only, for those who are not devotees will neither understand Kṛṣṇa nor Bhagavad-gītā. Those who do not accept Kṛṣṇa as He is and Bhagavad-gītā as it is should not try to explain Bhagavad-gītā whimsically and become offenders. Bhagavad-gītā should be explained to persons who are ready to accept Kṛṣṇa as the Supreme Personality of Godhead. It is a subject matter for the devotees only and not for philosophical speculators. Anyone, however, who tries sincerely to present Bhagavad-gītā as it is will advance in devotional activities and reach the pure devotional state of life. As a result of such pure devotion, he is sure to go back home, back to Godhead.
Prabhupāda: Next verse.
Devotee: Na ca tasmān manuṣyeṣu kaścin me priya-kṛttamaḥ, bhavitā na ca me tasmād anyaḥ priyataro bhuvi (BG 18.69). "There is no servant in this world more dear to Me than he. Nor will there ever be one more dear."
Prabhupāda: Those who are preachers.
Devotee: Yes.