Bhisma-tila

North of Vidyanagara shines Jahnudvipa, where the hermitage of Jahnu Muni is visible to all. Here Jahnu Muni drank the Ganges, who then appeared as his daughter, Jahnavi. Kṛṣṇa’s devotee Bhisma learned bhāgavata-dharma here in the Muni’s asrama. By worshiping the Lord without duplicity. Jahnu Muni easily attained the lotus feet of Sri Caitanya. This Jahnudvipa is nondifferent from Bhadravana of Vraja. When will that forest be visible to my eyes? In that forest on top of the supremely pure Bhisma-tila, I will perform my worship. In the evening. Bhisma will appear before me in his spiritual body, blackish like Krsna, holding tulasi beads, marked with twelve tilaka marks, and constantly chanting the holy name in bliss. “Listen. newcomer to Navadvipa, now I am singing the glories of Gauranga. Previously, while dying on the battlefield of Kuruksetra, I was able to see Lord Kṛṣṇa with full concentration. At that time the Lord told me. Previously, you had darsana of Navadvipa, and for that pious activity, you have gained Gauranga’s mercy. Now you have become an eternal resident of Navadvipa.’
“Therefore, give up all other desires and aspirations, live in Navadvipa and worship Gaurahari. You need no longer fear the bondage of material objects, for it is certain that you will attain the service of Gauranga’s lotus feet. “By the Lord’s mercy, liberated souls can always see the pastimes of Krsna and Gaura in this dhama. Lamentation, fear, death, all causes of disturbance, all material desires, and all afflictions of the conditioned soul cannot exist here. “The pure devotees have all sunk in an ocean of happiness by drinking the intoxicating beverage of service to Krsna. They do not know the pains of this world, they do not experience the difficulty of any wants, because they are situated in their pure bodies with pure desires. “The Supreme Lord, who has unlimited devotee followers – eternally liberated devotees and liberated devotees coming from the material world-performs His pastimes in these forests with each devotee according to his respective emotional mood. “This place is unlimited and has no aspect of dull matter, for here the spiritual energy is the predominating goddess. Here, place, the senses, the body, all exist beyond the illusory energy in a state of pure goodness.
“By the Lord’s desire, as long as you do not give up the body in material existence and your intelligence sticks to material designations, the actual dhāma will not be visible in its complete form. “By the Lord’s mercy, you will receive a spiritual body, and your progress here will be unobstructed. The illusion of material energy will retreat, and you will receive unlimited bliss in this eternal spiritual realm. “But as long as you have this material body, carefully remain fixed in the principles of bhakti. Always serve the devotees. chant the name of Kṛṣṇa, worship Radha and Kṛṣṇa, and remain indifferent to sense gratification. “With the mercy of the devotees, the name, and the dhama keep undesirable association far away. Soon you will attain residence in the eternal dhāma where pure service to Radha and Kṛṣṇa manifests.”
Hearing the instructions of Bhismadeva, I will offer my full obeisances at his feet. After blessing me he will disappear, and, weeping I will proceed to Modadruma forest.
(Sri Navadvipa Bhava-taranga)

As super soul of King Yudhisthir, He did not allow the King to be convinced by the words of Vyasa and others including Himself because He desired that the King should hear instructions from dying Bhisma Deva who was another great devotee of the Lord. The Lord wanted that at the last stage of his material existence the great warrior Bhisma Deva must see the Lord Personally as well as His beloved grandchildren King Yudhisthir etc. now situated on the throne and thus pass away very peacefully. Bhismadeva was not at all satisfied to fight against Pandavas who were his beloved fatherless grandchildren. But the Kshatriyas are also very stern people and therefore he was obliged to take side of the Duryodhana because he was maintained at the expense of Duryodhana. Besides this the Lord also desired that King Yudhisthir should be pacified by the words of Bhisma Deva so that the world may see that Bhismadeva excelled all in knowledge including the Lord Himself.
(SB 1.8.46)