A devotee of Kṛṣṇa is friendly to everyone. Therefore it is said here that he has no enemy. How is this? A devotee situated in Kṛṣṇa consciousness knows that only devotional service to Kṛṣṇa (God) 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, or God Consciousness, into human society. There are many examples in history of devotees of the Lord risking 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 Ṭhākur Haridāsa. 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 (God). 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.
Bhagavad-gita As It Is – Macmillan 1972 Edition
By His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
Chapter 11 The Universial Form Text 55
mat-karma-kṛn mat-paramo
mad-bhaktaḥ saṅga-varjitaḥ
nirvairaḥ sarva-bhūteṣu
yaḥ sa mām eti pāṇḍava
mat-karma-kṛt—engaged in doing My work; mat-paramaḥ—concerning Me, the Supreme; mat-bhaktaḥ—engaged in My devotional service; saṅga-varjitaḥ—freed from the contamination of previous activities and mental speculation; nirvairaḥ—without an enemy; sarva-bhūteṣu—to every living entity; yaḥ—one who; saḥ—he; mām—unto Me; eti—comes; pāṇḍava—O son of Pāṇḍu.
Translation
My dear Arjuna, one who is engaged in My pure devotional service, free from the contaminations of previous activities and from mental speculation, who is friendly to every living entity, certainly comes to Me.