Śrīla Narottama dāsa Ṭhākura has sung, chāḍiyā vaiṣṇava-sevā nistāra pāyeche kebā: "Without serving the lotus feet of a pure Vaiṣṇava or spiritual master, no one has ever attained perfect liberation from material bondage." prince Priyavrata regularly served the lotus feet of Nārada, and thus the Prince perfectly understood transcendental subjects in truth (sa-tattvaḥ).
(Srimad Bhagavatam----5:1:6----purport).

Just as an ordinary man always engages his mind in material activities, a devotee always engages his mind in spiritual activities. This is called brahma-satra, or meditating upon the Supreme Lord always. Prince Priyavrata was perfectly initiated into this practice by Śrī Nārada.
(Srimad Bhagavatam----5:1:6----purport).

While instructing Mahārāja Yudhiṣṭhira about the symptoms of guṇa and karma, Nārada Muni said that these symptoms must govern the division of society. In other words, if a person born in the family of a brāhmaṇa has the symptoms of a śūdra, he should be designated as a śūdra. Similarly, if a śūdra has brahminical qualities, he should be designated a brāhmaṇa.
(Srimad Bhagavatam----5:1:14----purport).

Once Nārada became angry with the two sons of Kuvera, Nalakūvara and Maṇigrīva, and he chastised them by turning them into trees. The result was that later they were liberated by Lord Śrī Kṛṣṇa. The devotee is situated on the absolute platform, and when he is angry or pleased, there is no difference, for in either case he bestows his benediction.
(Srimad Bhagavatam----5:10:8----purport).

In his own book, known as Nārada Pañcarātra, Bhagavān Nārada has very vividly described how to work to achieve the ultimate goal of life—devotion—through knowledge and through execution of the mystic yoga system. He has also described the glories of the Lord, the Supreme Personality of Godhead. The great sage Nārada instructed the tenets of this transcendental literature to Sāvarṇi Manu in order to teach those inhabitants of Bhārata-varṣa who strictly follow the principles of varṇāśrama-dharma how to achieve the devotional service of the Lord. Thus Nārada Muni, along with the other inhabitants of Bhārata-varṣa, always engages in the service of Nara-Nārāyaṇa, and he chants as follows.
(Srimad Bhagavatam----5:19:10----translation).

Nārada, the most powerful saintly sage, also worships Nara-Nārāyaṇa by chanting the following mantra: The Supreme Personality of Godhead is the master of the creation, maintenance and annihilation of this visible cosmic manifestation, yet He is completely free from false prestige. Although to the foolish He appears to have accepted a material body like us, He is unaffected by bodily tribulations like hunger, thirst and fatigue. Although He is the witness who sees everything, His senses are unpolluted by the objects He sees. Let me offer my respectful obeisances unto that unattached, pure witness of the world, the Supreme Soul, the Personality of Godhead.
(Srimad Bhagavatam----5:19:12----translation).

Anantadeva exists in the lower planetary system of Pātāla.
śrī-nārada-gosāñi 'tumburu' kari' saṅge
se yaśa gāyena brahmā-sthāne śloka-vandhe
"Bearing his stringed instrument, the tumburu, on his shoulders, the great sage Nārada Muni always glorifies Lord Ananta. Nārada Muni has composed many transcendental verses in praise of the Lord."
sṛṣṭi, sthiti, pralaya, sattvādi yata guṇa
yāṅra dṛṣṭi-pāte haya, yāya punaḥ punaḥ
"Simply due to the glance of Lord Ananta, the three material modes of nature interact and produce creation, maintenance and annihilation. These modes of nature appear again and again.
(Srimad Bhagavatam----5:25:9----purport).

The purport of this song is that Nārada Muni, the great soul, plays a stringed instrument called a vīṇā, vibrating the sound rādhikā-ramaṇa, which is another name for Kṛṣṇa. As soon as he strokes the strings, all the devotees begin responding, making a very beautiful vibration. Accompanied by the stringed instrument, the singing seems like a shower of nectar, and all the devotees dance in ecstasy to the fullest extent of their satisfaction.
(Srimad Bhagavatam----6:5:22----purport).

Lord Śiva embraces Nārada Muni and begins talking in an ecstatic voice, and seeing Lord Śiva dancing with Nārada, Lord Brahmā also joins, saying, "All of you kindly chant 'Hari bol! Hari bol!' " The King of heaven, Indra, also gradually joins with great satisfaction and begins dancing and chanting "Hari bol! Hari bol!"
(Srimad Bhagavatam----6:5:22----purport).

One can spiritually advance if one actually follows the instructions of Nārada Muni. If one pleases Nārada Muni, then the Supreme Personality of Godhead, Hṛṣīkeśa, is also pleased (yasya prasādād bhagavat-prasādaḥ ). The immediate spiritual master is the representative of Nārada Muni; there is no difference between the instructions of Nārada Muni and those of the present spiritual master. Both Nārada Muni and the present spiritual master speak the same teachings of Kṛṣṇa.
(Srimad Bhagavatam----6:5:22----purport).

Śrīla Viśvanātha Cakravartī Ṭhākura comments that Nārada Muni had delivered the entire family of Svāyambhuva Manu, beginning with Priyavrata and Uttānapāda. He had delivered Uttānapāda's son Dhruva and had even delivered Prācīnabarhi, who was engaged in fruitive activities. Nevertheless, he could not deliver Prajāpati Dakṣa. Prajāpati Dakṣa sawNārada before him because Nārada had personally come to deliver him. Nārada Muni took the opportunity to approach Prajāpati Dakṣa in his bereavement because the time of bereavement is a suitable time for appreciating bhakti-yoga.
(Srimad Bhagavatam----6:5:35----purport).

When Lord Kṛṣṇa was sitting on His throne and Nārada fortunately entered His assembly, even Lord Kṛṣṇa immediately stood up with His officers and ministers to offer respectful obeisances to Nārada. Nārada knew that Kṛṣṇa is the Supreme Personality of Godhead, and Kṛṣṇa knew that Nārada was His devotee, but although Kṛṣṇa is the Supreme Lord and Nārada is the Lord's devotee, the Lord observed the religious etiquette. Since Nārada was a brahmacārī, a brāhmaṇa and an exalted devotee, even Kṛṣṇa, while acting as a king, offered His respectful obeisances unto Nārada. Such is the conduct visible in the Vedic civilization.
(Srimad Bhagavatam----6:7:13----purport).

Brahmā is so powerful that he is in charge of creating an entire universe, yet he personally came to receive the Supreme Personality of Godhead. Bhava, Lord Śiva, is always jubilant in chanting the holy name of the Lord. And what to speak of Nārada? Nārada-muni, bājāya vīṇā, rādhikā-ramaṇa-nāme. Nārada Muni is always chanting the glories of the Lord, and his engagement is to travel all over the universe and find a devotee or make someone a devotee. Even a hunter was made a devotee by the grace of Nārada. Śrīla Sanātana Gosvāmī, in his Toṣaṇī, says that the word nārada-ādibhiḥ means that Nārada and the demigods were accompanied by other saintly persons, like Sanaka and Sanātana, all of whom came to congratulate or welcome the Supreme Personality of Godhead.
(Srimad Bhagavatam----10:2:25----purport).

In the Itihāsa-samuccaya, Nārada tells Puṇḍarīka:
janmāntara-sahasreṣu yasya syād buddhir īdṛśī
dāso ’haṁ vāsudevasya sarvāl lokān samuddharet
"After many, many births, when a person realizes that he is the eternal servant of Vāsudeva, he can deliver all the worlds."
(Sri Caitanya Caritamrta----2:8:246----purport).

Following in the footsteps of Nārada Muni, this Kṛṣṇa consciousness movement is rendering service to humanity by giving everyone a chance to come in contact with Kṛṣṇa. If one is fortunate, he becomes intimately related with this movement. Then, by the grace of Kṛṣṇa, one's life becomes successful.
(Sri Caitanya Caritamrta----2:19:151----purport).

Śrī Nārada Muni is a naiṣṭhika-brahmacārī. There are four types of brahmacārīs. The first is called sāvitra, which refers to a brahmacārī who, after initiation and the sacred thread ceremony, must observe at least three days of celibacy. The next is called prājāpatya, which refers to a brahmacārī who strictly observes celibacy for at least one year after initiation. The next is called brāhma-brahmacārī, which refers to a brahmacārī who observes celibacy from the time of initiation up to the time of the completion of his study of the Vedic literature.
(Krsna Book).

The naiṣṭhika-brahmacārī, however, is completely reluctant to have any sex life; therefore the Kumāras and Nārada are known as naiṣṭhika-brahmacārīs. Such brahmacārīs are called vīra-vrata because their vow of celibacy is as heroic as the vows of the kṣatriyas. The brahmacārī system of life is especially advantageous in that it increases the power of memory and determination. It is specifically mentioned in this connection that because Nārada was a naiṣṭhika-brahmacārī he could remember whatever he heard from his spiritual master and would never forget it. One who can remember everything perpetually is called a śruti-dhara.
(Krsna Book).

Once, Lord Śiva, after giving a benediction to a demon named Vṛkāsura, the son of Śakuni, was himself entrapped in a very dangerous position. Vṛkāsura was searching after a benediction and trying to decide which of the three presiding deities to worship in order to get it. In the meantime he happened to meet the great sage Nārada and consulted with him as to whom he should approach to achieve quick results from his austerity. He inquired, "Of the three deities, namely Lord Brahmā, Lord Viṣṇu and Lord Śiva, who is most quickly satisfied?" Nārada could understand the plan of the demon, and he advised him, "You had better worship Lord Śiva; then you will quickly get the desired result. Lord Śiva is very quickly satisfied and very quickly dissatisfied also. So you try to satisfy Lord Śiva." Nārada also cited instances wherein demons like Rāvaṇa and Bāṇāsura were enriched with great opulences simply by satisfying Lord Śiva with prayers. Because the great sage Nārada was aware of the nature of the demon Vṛkāsura, he did not advise him to approach Viṣṇu or Lord Brahmā. Persons such as Vṛkāsura, who are situated in the material mode of ignorance, cannot stick to the worship of Viṣṇu.
(Krsna Book).

The great sage Nārada has said,
sarvopādhi-vinirmuktaṁ
tat-paratvena nirmalam
hṛṣīkeṇa hṛṣīkeśa-
sevanaṁ bhaktir ucyate
(CC.2>19:117)
Bhakti, or devotional service, means engaging all our senses in the service of the Lord, the Supreme Personality of Godhead, the master of all the senses. When the spirit soul renders service unto Him, there are two side effects-one is freed from all material designations, and, simply by being employed in the service of the Lord, one's senses are purified. (Nārada-Pañcarātra).
(Renunciation through Wisdom).

This natural attraction for Kṛṣṇa on the part of Prahlāda was developed simply by the mercy of Nārada. When Prahlāda Mahārāja was within the womb of his mother, she was being sympathetically instructed by Nārada about the science of devotional service, and at the same time Nārada was wishing that the child within the womb could also take advantage of the instructions. Because Nārada, an authorized devotee and great associate of the Personality of Godhead, was desiring auspiciousness for Prahlāda Mahārāja, he developed all the characteristics of a high-grade devotee. This is called natural attraction. It is caused by the special grace of the Personality of Godhead or by the special grace of a great devotee like Nārada.
(Nectar of Devotion).