SB 4.20.33 purport-The sum and substance of religious life is to execute the orders of the Supreme Personality of Godhead, and one who does so is perfectly religious. In Bhagavad-gītā (18.65) the Supreme Lord Kṛṣṇa says, man-manā bhava mad-bhaktaḥ: “Just think of Me always and become My devotee.” Furthermore, the Lord says, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja: “Give up all kinds of material engagement and simply surrender unto Me.” (Bg. 18.66) This is the primary principle of religion. Anyone who directly executes such an order from the personality of Godhead is actually a religious person. Others are described as pretenders, for there are many activities going on throughout the world in the name of religion which are not actually religious. For one who executes the order of the Supreme Personality of Godhead, however, there is only good fortune throughout the world.

SB 4.24.15 purport-It is clear that to perform austerities or penances, or, for that matter, any form of devotional service, one has to be guided by a spiritual master. Here it is clearly stated that the ten sons of Mahārāja Prācīnabarhi were favored by the appearance of Lord Śiva, who, out of great kindness, gave them instructions regarding the execution of austerities. Lord Śiva actually became the spiritual master of the ten sons, and in turn his disciples took his words so seriously that simply by meditating upon his instructions (dhyāyantaḥ) they became perfect. This is the secret of success. After being initiated and receiving the orders of the spiritual master, the disciple should unhesitatingly think about the instructions or orders of the spiritual master and should not allow himself to be disturbed by anything else. This is also the verdict of Śrīla Viśvanātha Cakravartī Ṭhākura, who, while explaining a verse of Bhagavad-gītā (vyavasāyātmikā buddhir ekeha kuru-nandana, Bg. 2.41), points out that the order of the spiritual master is the life substance of the disciple. The disciple should not consider whether he is going back home, back to Godhead; his first business should be to execute the order of his spiritual master. Thus a disciple should always meditate on the order of the spiritual master, and that is perfectional meditation. Not only should he meditate upon that order, but he should find out the means by which he can perfectly worship and execute it.

SB 6.11.24 purport-This verse gives the sum and substance of devotional life. One must first become a servant of the servant of the servant of the Lord (dāsānudāsa). Śrī Caitanya Mahāprabhu advised, and He also showed by His own example, that a living entity should always desire to be a servant of the servant of the servant of Kṛṣṇa, the maintainer of the gopīs (gopī-bhartuḥ pada-kamalayor dāsa-dāsānudāsaḥ). This means that one must accept a spiritual master who comes in the disciplic succession and is a servant of the servant of the Lord. Under his direction, one must then engage one’s three properties, namely his body, mind and words. The body should be engaged in physical activity under the order of the master, the mind should think of Kṛṣṇa incessantly, and one’s words should be engaged in preaching the glories of the Lord. If one is thus engaged in the loving service of the Lord, one’s life is successful.

Jan 6 1969 purport to song....Therefore Narottama dāsa Ṭhākura says, "Such devotee, it doesn't matter whether he's in the renounced order of life or whether he is a householder." Gṛha. Gṛha means householder. So Caitanya Mahāprabhu's movement does not say that one has to become a renounced order, sannyāsī. Just like Māyāvādī sannyāsīs, impersonalists, Śaṅkarācārya, they first, they put the first condition that "You take up the renounced order of life first, and then talk of spiritual advancement." So in Śaṅkara sampradāya nobody is accepted as bona fide impersonalist unless he has accepted the renounced order of life. But here, in Caitanya's movement, there is no such restriction. Advaita Prabhu, He was a householder. Nityānanda, He was householder. Gadādhara, He was also householder. And Śrīvāsa, he was also householder. And Caitanya Mahāprabhu also married twice. So it doesn't matter. Narottama dāsa Ṭhākura says that to become in renounced order of life, or to remain in householder life, that does not matter. If he is actually taking part in the movements of Caitanya's saṅkīrtana activities and actually understanding what it is, he is taking sport in the waves of such devotional ocean, then such person is always liberated. And Narottama dāsa Ṭhākura is aspiring his association ever increasingly. That is the sum and substance of this song. (end)

SB 4.24.19 purport... It is the duty of the father, the spiritual master and the king to regulate their subordinates in such a way that they ultimately become fully unalloyed devotees of the Supreme Lord. That is the duty of the superiors, and it is the duty of the subordinates to obey their orders perfectly and in a disciplined way. The word śirasā (“on their heads”) is also significant, for the Pracetās accepted the orders of their father and carried them on their heads, which means they accepted them in complete surrender.

Aug 10 1974 Vrndavana.....So the process is that if you want to make any progress... Just like Nārada Muni. He made immediately progress simply by associating with the mahātmās only for four months. Why? That is explained in the next verse. What is that? Tasyaivaṁ me anuraktasya. "I became attached to them. I became a lover of the mahātmās." Anuraktasya praśritasya. "I became obedient." Not disobedient. Guror avajñāḥ, that is great offense. If you become disobedient to guru, then your business is finished. These are the qualifications. Me anuraktasya praśritasya... And hatainasaḥ. Hata enasaḥ. Means "All my sinful activities stopped." Nobody can understand the bona fide guru or Kṛṣṇa unless he is free from sinful life. Therefore we have to accept this principle: no illicit sex, no gambling, no, I mean to say, intoxication, no meat-eating. If you follow these four principles, then you become hatainasaḥ. Hata enasaḥ. Your sinful life stopped. So hatainasaḥ śraddadhānasya. Śraddadhāna means with faith and obedience. Not that blindly.

LA July 13 1971—Prabhupāda: Unless one is prepared that "I am accepting somebody as my spiritual master. I must accept whatever he says," if there is any doubt, that "I cannot accept his words verbatim," then one should not accept him as spiritual master. That is hypocrisy

Some Conclusions-- Obedience is the key to spiritual life and the orders of God come down to us thru His bona fide representatives, whom we must obey if we want success. As we see over time, this complete obedience, to give up ones false sense of independence,  is not so easy to perform and it does take some time for most of us.
Hare Krsna
Compiled by Damaghosa das