Acting out of Duty vs Acting out of Emotions

SB 4.14.13 — The great sages, having thus decided, approached King Vena. Concealing their real anger, they pacified him with sweet words and then spoke as follows.

King Vena had caused numerous problems because of his behavior and the sages were very concerned about the spiritual welfare of the kingdom and people in general. While they contemplated on the best course of action and approached King Vena , we see that even if they were very angry they still acted out of their duty and not out of their anger. 

In the  verses SB 4.14.14 to SB 4.14.22 they instruct him about the path of dharma. King Vena gets upset and blasphemes not only them but also Lord Vishnu and all the demigods.

After hearing King Vena speak, the sages decide that he must be killed again not because of being personally hurt by his behavior but because he was blasphemeing the Lord :

SB 4.14.30 — My dear Vidura, all good fortune unto you. The foolish King, who thought himself very learned, thus insulted the great sages, and the sages, being brokenhearted by the King’s words, became very angry at him.

SB 4.14.31 — All the great saintly sages immediately cried: Kill him! Kill him! He is the most dreadful, sinful person. If he lives, he will certainly turn the whole world into ashes in no time.

SB 4.14.32 — The saintly sages continued: This impious, impudent man does not deserve to sit on the throne at all. He is so shameless that he even dared insult the Supreme Personality of Godhead, Lord Viṣṇu.

SB 4.14.33 — But for King Vena, who is simply inauspicious, who would blaspheme the Supreme Personality of Godhead, by whose mercy one is awarded all kinds of fortune and opulence?

SB 4.14.34 — The great sages, thus manifesting their covert anger, immediately decided to kill the King. King Vena was already as good as dead due to his blasphemy against the Supreme Personality of Godhead. Thus without using any weapons, the sages killed King Vena simply by high-sounding words.

The destination of those who accept money or personal service in return of sharing Bhagavatam

SB 4.12.49-50

Persons who have completely taken shelter of the lotus feet of the Lord should recite this narration of Dhruva Mahārāja without taking remuneration. Specifically, recitation is recommended on the full-moon or dark-moon day, on the day after Ekādaśī, on the appearance of the Śravaṇa star, at the end of a particular tithi, or the occasion of Vyatīpāta, at the end of the month, or on Sunday. Such recitation should of course be performed before a favorable audience. When recitation is performed this way, without professional motive, the reciter and audience become perfect.

Purport: 

Professional reciters may ask money to extinguish the blazing fire within their bellies, but they cannot make any spiritual improvement or become perfect. It is therefore strictly forbidden to recite Śrīmad-Bhāgavatam as a profession to earn a livelihood. Only one who is completely surrendered at the lotus feet of the Supreme Personality of Godhead, depending fully on Him for personal maintenance or even for maintenance of his family, can attain perfection by recitation of Śrīmad-Bhāgavatam, which is full of narrations of the pastimes of the Lord and His devotees. The process can be summarized as follows: the audience must be faithfully receptive to theBhāgavata message, and the reciter should completely depend on the Supreme Personality of Godhead. Bhāgavatarecitation must not be a business. If done in the right way, not only does the reciter achieve perfect satisfaction, but the Lord also is very satisfied with the reciter and the audience, and thus both are liberated from material bondage simply by the process of hearing.

Importance of hearing in a Society of Twice Borns

SB 4.12.48

The great sage Maitreya recommended: One should chant of the character and activities of Dhruva Mahārāja both in the morning and in the evening, with great attention and care, in a society of brāhmaṇas or other twice-born persons.

From Srila Prabhupada's purport:

It is said that only in the association of devotees can one understand the importance of the character and pastimes of the Supreme Personality of Godhead or His devotees. In this verse it is especially recommended that Dhruva Mahārāja’s character be discussed in a society of the twice-born, which refers to the qualified brāhmaṇas, kṣatriyasand vaiśyas. One should especially seek the society of brāhmaṇas who are elevated to the position of Vaiṣṇavas. Thus discussion of Śrīmad-Bhāgavatam, which describes the character and pastimes of devotees and the Lord, is very quickly effective. The International Society for Krishna Consciousness has been organized for this purpose. In every center of this Society — not only in the morning, evening or noon, but practically twenty-four hours a day — there is continuous devotional service going on. Anyone who comes in contact with the Society automatically becomes a devotee. We have actual experience that many karmīs and others come to the Society and find a very pleasing and peaceful atmosphere in the temples of ISKCON. 

and 

Srila Prabhupada also explains this in the verse describing who can Back to Godhead in SB 4.12:

A devotee is equipoised. He sees everyone on the same transcendental platform. A devotee knows that although a conditioned soul has a particular type of body according to his past fruitive activities, factually everyone is part of the Supreme Lord. A devotee sees all living entities with spiritual vision and does not discriminate on the platform of the bodily concept of life. Such qualities develop only in the association of devotees. Without the association of devotees, one cannot advance in Kṛṣṇa consciousness. Therefore, we have established the International Society for Krishna Consciousness. Factually, whoever lives in this society automatically develops Kṛṣṇa consciousness. Devotees are dear to the Supreme Personality of Godhead, and the Supreme Personality of Godhead is only dear to devotees. On this platform only can one make progress in Kṛṣṇa consciousness. Persons in Kṛṣṇa consciousness, or devotees of the Lord, can please everyone, as is evident in the Kṛṣṇa consciousness movement.

Who can go Back to Godhead and who Does not Go Back to Godhead?

SB 4.12.36

The self-effulgent Vaikuṇṭha planets, by whose illumination alone all the illuminating planets within this material world give off reflected light, cannot be reached by those who are not merciful to other living entities. Only persons who constantly engage in welfare activities for other living entities can reach the Vaikuṇṭha planets.

SB 4.12.37

Persons who are peaceful, equipoised, cleansed and purified, and who know the art of pleasing all other living entities, keep friendship only with devotees of the Lord; they alone can very easily achieve the perfection of going back home, back to Godhead.

Suniti's Success as a mother

From Srila Prabhupada's purport to SB 4.12.34:

"It should be noted also that while Sunīti was going to Vaikuṇṭhaloka she also changed her body into a spiritual form. Like Śrī Sunīti, every mother should train her child to become a devotee like Dhruva Mahārāja. Sunīti instructed her son, even at the age of five years, to be unattached to worldly affairs and to go to the forest to search out the Supreme Lord. She never desired that her son remain at home comfortably without ever undertaking austerities and penances to achieve the favor of the Supreme Personality of Godhead. Every mother, like Sunīti, must take care of her son and train him to become a brahmacārī from the age of five years and to undergo austerities and penances for spiritual realization. The benefit will be that if her son becomes a strong devotee like Dhruva, certainly not only will he be transferred back home, back to Godhead, but she will also be transferred with him to the spiritual world, even though she may be unable to undergo austerities and penances in executing devotional service."