He was present even during the exile of the Pāṇḍavas and used to advise them in circumstances when they were perplexed. He instructed them how to live incognito for one year, and his instructions were strictly followed by the Pāṇḍavas during that time. His name is mentioned also when the general funeral ceremony was performed after the Battle of Kurukṣetra. In the Anuṣāsana-parva of Mahābhārata (127.15-16), he gave religious instructions very elaborately to Mahārāja Yudhiṣṭhira. He was actually the right type of priest of a householder, for he could guide the Pāṇḍavas on the right path of religion. A priest is meant for guiding the householder progressively in the right path of āśrama-dharma, or the occupational duty of a particular caste. There is practically no difference between the family priest and the spiritual master. The sages, saints and brāhmaṇas were especially meant for such functions.
(SRIMAD BHAGAVATAM--------1:9:6-7-------PURPORT).

According to the Vedic system, if a person dies during the daytime it is customary for his funeral ceremony to be performed before the sun sets, regardless of whether he is burned or buried, and if he dies at night the funeral must be completed before the next sunrise. Apparently the queens continued lamenting for the dead body, the lump of matter, and would not allow it to be taken away for burning. This illustrates the strong grip of illusion among foolish persons who consider the body the self. Women are generally considered less intelligent. Because of ignorance only, the queens thought of the dead body as their husband and somehow or other thought that if the body were kept their husband would remain with them. Such a conception of the self is certainly for go-khara-cows and asses. We have actually seen that sometimes when a cow's calf has died the milkman cheats the cow by presenting before her the dead body of her calf. Thus the cow, who would not otherwise allow milking, licks the dead body of the calf and allows herself to be milked. This substantiates the description of the śāstra that a foolish man in the bodily concept of life is like a cow. Not only do foolish men and women consider the body the self, but we have even seen that the dead body of a so-called yogī was kept for days by his disciples, who thought that their guru was in samādhi.
(SRIMAD BHAGAVATAM--------7:2:35-------PURPORT).

As a devotee of the Lord, he knew that the Lord's devotee cannot be vanquished at any time. Mahārāja Yudhiṣṭhira was quite aware of all these good wishes of Bhīṣmadeva, and therefore he must have been feeling the great separation. He was sorry for the separation of a great soul, and not for the material body which Bhīṣmadeva relinquished. The funeral ceremony was a necessary duty, although Bhīṣmadeva was a liberated soul. Since Bhīṣmadeva was without issue, the eldest grandson, namely Mahārāja Yudhiṣṭhira, was the rightful person to perform this ceremony. It was a great boon to Bhīṣmadeva that an equally great son of the family undertook the last rites of a great man.
(SRIMAD BHAGAVATAM--------1:9:46-------PURPORT).

The devotees, therefore, are under the direct care of the Lord. And the Lord also voluntarily puts Himself under the care of His devotees only. So all the sages, headed by Vyāsadeva, were devotees of the Lord, and therefore they chanted the Vedic hymns after the funeral ceremony just to please the Lord, who was present there personally. All the Vedic hymns are chanted to please Lord Kṛṣṇa. This is confirmed in the Bhagavad-gītā (15.15). All the Vedas, Upaniṣads, Vedānta, etc., are seeking Him only, and all hymns are for glorifying Him only. The sages, therefore, performed the exact acts suitable for the purpose, and they happily departed for their respective hermitages.
(SRIMAD BHAGAVATAM--------1:9:47-------PURPORT).

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