If one can gradually advance his status in devotional service, this is understood to be due to the causeless mercy of Kṛṣṇa Himself. If a person is completely detached from material enjoyment and has developed pure ecstatic devotion, even if he is sometimes accidentally found not living up to the standard of devotional service, one should not be envious of him. It is confirmed also in Bhagavad-gītā that a devotee who has unflinching faith in and devotion to the Lord, even if sometimes found to be accidentally deviated from pure devotional characteristics, should still be counted among the pure. Unflinching faith in devotional service, in Lord Kṛṣṇa and in the spiritual master makes one highly elevated in the activities of devotional service.
In the Nṛsiṁha Purāṇa it is stated, "If a person has completely engaged his mind, body and activities in the service of the Supreme Godhead, but externally he is found to be engaged in some abominable activities, these abominable activities will surely be very quickly vanquished by the influence of his staunch devotional force." The example is given that on the full moon there are some spots which may appear to be pockmarks. Still, the illumination spread by the full moon cannot be checked. Similarly, a little fault in the midst of volumes of devotional service is not at all to be counted as a fault. Attachment for Kṛṣṇa is transcendental bliss. Amid unlimited volumes of transcendental bliss, a spot of some material defect cannot act in any way.