If one has even a slight relationship with devotional service, all the fog of his sinful life is immediately vanquished

Expressions researched:
"if one has even a slight relationship with devotional service, all the fog of his sinful life is immediately vanquished"

SB Canto 6

The ābhāsa feature of bhakti is compared to twilight, and the accumulation of one's sinful activities is compared to fog. Since fog does not spread throughout the sky, the sun need do no more than merely manifest its first rays, and the fog immediately disappears. Similarly, if one has even a slight relationship with devotional service, all the fog of his sinful life is immediately vanquished.

SB 6.1.15, Purport:

In the Padma Purāṇa there is a statement that persons whose hearts are always attached to the devotional service of Lord Viṣṇu are immediately released from all the reactions of sinful life. These reactions generally exist in four phases. Some of them are ready to produce results immediately, some are in the form of seeds, some are unmanifested, and some are current. All such reactions are immediately nullified by devotional service. When devotional service is present in one's heart, desires to perform sinful activities have no place there. Sinful life is due to ignorance, which means forgetfulness of one's constitutional position as an eternal servant of God, but when one is fully Kṛṣṇa conscious he realizes that he is God's eternal servant.

In this regard, Śrīla Jīva Gosvāmī comments that bhakti may be divided into two divisions: (1) santatā, devotional service that continues incessantly with faith and love, and (2) kādācitkī, devotional service that does not continue incessantly but is sometimes awakened. Incessantly flowing devotional service (santatā) may also be divided into two categories: (1) service performed with slight attachment and (2) spontaneous devotional service. Intermittent devotional service (kādācitkī) may be divided into three categories: (1) rāgābhāsamayī, devotional service in which one is almost attached, (2) rāgābhāsa-śūnya-svarūpa-bhūtā, devotional service in which there is no spontaneous love but one likes the constitutional position of serving, and (3) ābhāsa-rūpā, a slight glimpse of devotional service. As for atonement, if one has caught even a slight glimpse of devotional service, all needs to undergo prāyaścitta, atonement, are superseded. Therefore atonement is certainly unnecessary when one has achieved spontaneous love and, above that, attachment with love, which are signs of increasing advancement in kādācitkī. Even in the stage of ābhāsa-rūpā bhakti, all the reactions of sinful life are uprooted and vanquished. Śrīla Jīva Gosvāmī expresses the opinion that the word kārtsnyena means that even if one has a desire to commit sinful actions, the roots of that desire are vanquished merely by ābhāsa-rūpā bhakti. The example of bhāskara, the sun, is most appropriate. The ābhāsa feature of bhakti is compared to twilight, and the accumulation of one's sinful activities is compared to fog. Since fog does not spread throughout the sky, the sun need do no more than merely manifest its first rays, and the fog immediately disappears. Similarly, if one has even a slight relationship with devotional service, all the fog of his sinful life is immediately vanquished.