Devotional activities are never to be considered material, although sometimes it appears that devotees are engaged just like ordinary men. BG 1972 purports

Expressions researched:
"Devotional activities are never to be considered material, although sometimes it appears that devotees are engaged just like ordinary men"

BG Chapters 7 - 12

Devotional activities are never to be considered material, although sometimes it appears that devotees are engaged just like ordinary men. One who can see and is familiar with devotional service will know that they are not material activities. They are all spiritual and devotional, uncontaminated by the material modes of nature.

BG 9.2, Purport:

For those who are engaged in the devotional service of the Supreme Personality of Godhead, all sinful reactions, whether fructified, in the stock, or in the form of a seed, gradually vanish. Therefore the purifying potency of devotional service is very strong, and it is called pavitram uttamam, the purest. Uttama means transcendental. Tamas means this material world or darkness, and uttama means that which is transcendental to material activities. Devotional activities are never to be considered material, although sometimes it appears that devotees are engaged just like ordinary men. One who can see and is familiar with devotional service will know that they are not material activities. They are all spiritual and devotional, uncontaminated by the material modes of nature.

It is said that the execution of devotional service is so perfect that one can perceive the results directly. This direct result is actually perceived, and we have practical experience that any person who is chanting the holy names of Kṛṣṇa (Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare) in course of chanting without offenses feels some transcendental pleasure and very quickly becomes purified of all material contamination. This is actually seen. Furthermore, if one engages not only in hearing but in trying to broadcast the message of devotional activities as well, or if he engages himself in helping the missionary activities of Kṛṣṇa consciousness, he gradually feels spiritual progress. This advancement in spiritual life does not depend on any kind of previous education or qualification. The method itself is so pure that by simply engaging in it one becomes pure.

In the Vedānta-sūtra (3.2.26) this is also described in the following words: prakāśaś ca karmaṇy abhyāsāt. "Devotional service is so potent that simply by engaging in the activities of devotional service one becomes enlightened without a doubt." A practical example of this can be seen in the previous life of Nārada, who in that life happened to be the son of a maidservant. He had no education, nor was he born into a high family. But when his mother was engaged in serving great devotees, Nārada also became engaged, and sometimes, in the absence of his mother, he would serve the great devotees himself.