Unless one is associated with devotees, his devotional service does not mature ; it does not become distinct from material activities. The Lord says, satāṁ prasaṅgān mama vīrya-saṁvido bhavanti hṛt-karṇa-rasāyanāḥ (SB 3.25.25). Only in the association of pure devotees can the words of Lord Kṛṣṇa be fully potent and relishable to the heart and ear .
(SB 4.9.11p)
Jīva Gosvāmī, commenting on this verse, says that Kṛṣṇa, in His plenary expansion as Paramātmā, is situated in the moving and the nonmoving entities as the Supersoul, so any neophyte devotee who simply gives his attention to the arca-mūrti, the form of the Supreme Lord in the temple, and does not respect other living entities is uselessly worshiping the form of the Lord in the temple.
There are three kinds of devotees of the Lord, and the neophyte is in the lowest stage. The neophyte devotee gives more attention to the Deity in the temple than to other devotees, so Jīva Gosvāmī warns that this sort of mentality should be corrected.
A devotee should see that Kṛṣṇa is present in everyone’s heart as Paramātmā; therefore every body is the embodiment or the temple of the Supreme Lord, and as such, as one offers respect to the temple of the Lord, he should similarly properly respect each and every body in whom the Paramātmā dwells.
Everyone should therefore be given proper respect and should not be neglected.
(BG 9.11p)
In spiritual life, one must conduct one’s whole life under the guidance of the guru. Only one who executes his spiritual life under the direction of the spiritual master can achieve the mercy of Kṛṣṇa. Yasya prasādād bhagavat-prasādaḥ. If one desires to advance in spiritual life but he acts whimsically, not following the orders of the spiritual master, he has no shelter. Yasyāprasādān na gatiḥ kuto ‘pi.
(SB 7.12.11p)