For a common man, it is very difficult to remember things as they are at the time of death, but by the grace of the Lord and His bona fide devotees, the spiritual masters, one can get this opportunity without difficulty
(Srimad Bhagavatam----1:8:4----purport).

That is the secret of learning the science. One does not need to be in the renounced order of life; he can remain in his present condition of life, but he must search out the association of a bona fide devotee of the Lord and hear from him the transcendental message of the Lord with faith and conviction.
(Srimad Bhagavatam----2:9:18----purport).

The devotees, however, do not waste time in such vain searching after knowledge of the Supreme, but they submissively hear the glories of the Lord from bona fide devotees. Thus they transcendentally enjoy the process of hearing and chanting.
(Srimad Bhagavatam----3:6:38----purport).

On faith one associates with bona fide devotees, and by such association one can become engaged in bona fide devotional service, which includes proper initiation and the execution of the primary devotional duties prescribed in the revealed scriptures. This is clearly indicated herein by the word śrutekṣita. The śrutekṣita path is to hear from bona fide devotees who are conversant with Vedic wisdom, free from mundane sentiment.
(Srimad Bhagavatam----3:9:11----purport).

No one can be a greater well-wishing friend to any living entity than the Supreme Personality of Godhead. He is so kindly disposed towards everyone that in spite of our completely forgetting our relationship with the Supreme Lord, He comes Himself—sometimes personally, as Lord Kṛṣṇa appeared on this earth, and sometimes as His devotee, as did Lord Caitanya Mahāprabhu—and sometimes He sends His bona fide devotees to reclaim all the fallen souls.
(Srimad Bhagavatam----3:15:31----purport).

This knowledge cannot be appreciated by any ordinary man. Therefore, since a disciplic succession is required, this knowledge is expounded either by the Supreme Personality of Godhead Himself or by His bona fide devotee.
(Srimad Bhagavatam----3:25:1----purport).

We should always remember that to become a bona fide devotee of the Lord is not an easy task, but in this age, by the mercy of Lord Caitanya, it has been made very easy. But if we do not follow even the liberal instructions of Lord Caitanya, how can we expect to discharge our regular duties in devotional service?
(Srimad Bhagavatam----4:8:72----purport).

A bona fide devotee of Lord Kṛṣṇa is always pained to see the fallen condition of the whole world. Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura used to say, “There is no scarcity of anything within this world. The only scarcity is of Kṛṣṇa consciousness.”
(Sri Caitanya Caritamrta----1:13:67----purport).