When, freed from such unwanted association and from the contamination of material desires, one favorably cultivates knowledge of Krsna, that is called pure devotional service. BG 1972 purports

Expressions researched:
"When, freed from such unwanted association and from the contamination of material desires, one favorably cultivates knowledge of Krsna, that is called pure devotional service"

BG Chapters 7 - 12

In this verse Śrīla Rūpa Gosvāmī clearly states that if anyone wants to execute unalloyed devotional service, he must be freed from all kinds of material contamination. He must be freed from the association of persons who are addicted to fruitive activities and mental speculation. When, freed from such unwanted association and from the contamination of material desires, one favorably cultivates knowledge of Kṛṣṇa, that is called pure devotional service.

BG 11.55, Purport:

In this verse Śrīla Rūpa Gosvāmī clearly states that if anyone wants to execute unalloyed devotional service, he must be freed from all kinds of material contamination. He must be freed from the association of persons who are addicted to fruitive activities and mental speculation. When, freed from such unwanted association and from the contamination of material desires, one favorably cultivates knowledge of Kṛṣṇa, that is called pure devotional service. Ānukūlyasya saṅkalpaḥ prātikūlyasya varjanam (Hari-bhakti-vilāsa 11.676). One should think of Kṛṣṇa and act for Kṛṣṇa favorably, not unfavorably. Kaṁsa was an enemy of Kṛṣṇa's. From the very beginning of Kṛṣṇa's birth, Kaṁsa planned in so many ways to kill Him, and because he was always unsuccessful, he was always thinking of Kṛṣṇa. Thus while working, while eating and while sleeping, he was always Kṛṣṇa conscious in every respect, but that Kṛṣṇa consciousness was not favorable, and therefore in spite of his always thinking of Kṛṣṇa twenty-four hours a day, he was considered a demon, and Kṛṣṇa at last killed him. Of course anyone who is killed by Kṛṣṇa attains salvation immediately, but that is not the aim of the pure devotee. The pure devotee does not even want salvation. He does not want to be transferred even to the highest planet, Goloka Vṛndāvana. His only objective is to serve Kṛṣṇa wherever he may be.

A devotee of Kṛṣṇa is friendly to everyone. Therefore it is said here that he has no enemy (nirvairaḥ). How is this? A devotee situated in Kṛṣṇa consciousness knows that only devotional service to Kṛṣṇa can relieve a person from all the problems of life. He has personal experience of this, and therefore he wants to introduce this system, Kṛṣṇa consciousness, into human society. There are many examples in history of devotees of the Lord who risked their lives for the spreading of God consciousness. The favorite example is Lord Jesus Christ. He was crucified by the nondevotees, but he sacrificed his life for spreading God consciousness. Of course, it would be superficial to understand that he was killed. Similarly, in India also there are many examples, such as Ṭhākura Haridāsa and Prahlāda Mahārāja. Why such risk? Because they wanted to spread Kṛṣṇa consciousness, and it is difficult. A Kṛṣṇa conscious person knows that if a man is suffering it is due to his forgetfulness of his eternal relationship with Kṛṣṇa. Therefore, the highest benefit one can render to human society is relieving one's neighbor from all material problems. In such a way, a pure devotee is engaged in the service of the Lord. Now, we can imagine how merciful Kṛṣṇa is to those engaged in His service, risking everything for Him. Therefore it is certain that such persons must reach the supreme planet after leaving the body.