Sometimes less intelligent men ask whether one has to approach a guru to be instructed in devotional service for spiritual advancement. The answer is given here—indeed, not only here, but also in Bhagavad-gītā, where Arjuna accepted Kṛṣṇa as his guru (śiṣyas te ’haṁ śādhi māṁ tvāṁ prapannam). The Vedas also instruct, tad-vijñānārthaṁ sa guruṁ evābhigacchet: [MU tad-vijñānārthaṁ sa gurum evābhigacchet
samit-pāṇiḥ śrotriyaṁ brahma-niṣṭham

“To understand these things properly, one must humbly approach, with firewood in hand, a spiritual master who is learned in the Vedas and firmly devoted to the Absolute Truth.”
[Muṇḍaka Upaniṣad 1.2.12]