tasya sañjanayan harṣaṁ kuru-vṛddhaḥ pitāmahaḥ siṁha-nādaṁ vinadyoccaiḥ śaṅkhaṁ dadhmau pratāpavān

The grandsire of the Kuru dynasty could understand the inner meaning of the heart of his grandson Duryodhana, and out of his natural compassion for him he tried to cheer him by blowing his conchshell very loudly, befitting his position as a lion. Indirectly, by the symbolism of the conchshell, he informed his depressed grandson Duryodhana that he had no chance of victory in the battle, because the Supreme Lord Kṛṣṇa was on the other side. But still, it was his duty to conduct the fight, and no pains would be spared in that connection.

tataḥ śaṅkhāś ca bheryaś ca paṇavānaka-gomukhāḥ sahasaivābhyahanyanta sa śabdas tumulo ’bhavat

After that, the conchshells, drums, bugles, trumpets and horns were all suddenly sounded, and the combined sound was tumultuous.

tataḥ śvetair hayair yukte mahati syandane sthitau mādhavaḥ pāṇḍavaś caiva divyau śaṅkhau pradadhmatuḥ

In contrast with the conchshell blown by Bhīṣmadeva, the conchshells in the hands of Kṛṣṇa and Arjuna are described as transcendental. The sounding of the transcendental conchshells indicated that there was no hope of victory for the other side because Kṛṣṇa was on the side of the Pāṇḍavas. Jayas tu pāṇḍu-putrāṇāṁ yeṣāṁ pakṣe janārdanaḥ. Victory is always with persons like the sons of Pāṇḍu because Lord Kṛṣṇa is associated with them. And whenever and wherever the Lord is present, the goddess of fortune is also there because the goddess of fortune never lives alone without her husband. Therefore, victory and fortune were awaiting Arjuna, as indicated by the transcendental sound produced by the conchshell of Viṣṇu, or Lord Kṛṣṇa. Besides that, the chariot on which both the friends were seated had been donated by Agni (the fire-god) to Arjuna, and this indicated that this chariot was capable of conquering all sides, wherever it was drawn over the three worlds.

pāñcajanyaṁ hṛṣīkeśo devadattaṁ dhanañ-jayaḥ pauṇḍraṁ dadhmau mahā-śaṅkhaṁ bhīma-karmā vṛkodaraḥ

Lord Kṛṣṇa is referred to as Hṛṣīkeśa in this verse because He is the owner of all senses. The living entities are part and parcel of Him, and therefore the senses of the living entities are also part and parcel of His senses. The impersonalists cannot account for the senses of the living entities, and therefore they are always anxious to describe all living entities as senseless, or impersonal. The Lord, situated in the hearts of all living entities, directs their senses. But He directs in terms of the surrender of the living entity, and in the case of a pure devotee He directly controls the senses. Here on the Battlefield of Kurukṣetra the Lord directly controls the transcendental senses of Arjuna, and thus His particular name of Hṛṣīkeśa. The Lord has different names according to His different activities. For example, His name is Madhusūdana because He killed the demon of the name Madhu; His name is Govinda because He gives pleasure to the cows and to the senses; His name is Vāsudeva because He appeared as the son of Vasudeva; His name is Devakī-nandana because He accepted Devakī as His mother; His name is Yaśodā-nandana because He awarded His childhood pastimes to Yaśodā at Vṛndāvana; His name is Pārtha-sārathi because He worked as charioteer of His friend Arjuna. Similarly, His name is Hṛṣīkeśa because He gave direction to Arjuna on the Battlefield of Kurukṣetra. Arjuna is referred to as Dhanañjaya in this verse because he helped his elder brother in fetching wealth when it was required by the king to make expenditures for different sacrifices. Similarly, Bhīma is known as Vṛkodara because he could eat as voraciously as he could perform herculean tasks, such as killing the demon Hiḍimba. So the particular types of conchshell blown by the different personalities on the side of the Pāṇḍavas, beginning with the Lord’s, were all very encouraging to the fighting soldiers. On the other side there were no such credits, nor the presence of Lord Kṛṣṇa, the supreme director, nor that of the goddess of fortune. So they were predestined to lose the battle – and that was the message announced by the sounds of the conchshells.

anantavijayaṁ rājā kuntī-putro yudhiṣṭhiraḥ nakulaḥ sahadevaś ca sughoṣa-maṇipuṣpakau

King Yudhishthira, the son of Kunti, blew his conch shell named Anantavijaya; and Nakula and Sahadeva blew theirs, named Sughosha and Manipushpaka

kāśyaś ca parameṣv-āsaḥ śikhaṇḍī ca mahā-rathaḥ dhṛṣṭadyumno virāṭaś ca sātyakiś cāparājitaḥ

This verse lists the formidable independent kings and military commanders who have allied with the Pandavas. In the original purport, it is noted that 'kings from many states of the world – all were present there, and all were doomed.' Sanjaya is warning Dhritarashtra that his stubbornness hasn't just caused a family dispute; it has dragged the greatest warriors and neighboring kingdoms (like Kashi and Virata) into a massive, catastrophic global conflict.

drupado draupadeyāś ca sarvaśaḥ pṛthivī-pate saubhadraś ca mahā-bāhuḥ śaṅkhān dadhmuḥ pṛthak pṛthak

This verse specifically mentions the younger generation—the sons of Draupadi and Abhimanyu (the son of Subhadra). The original purport heavily emphasizes that the signs indicated "the whole Kuru dynasty would be killed," from the grandsires down to the "grandsons like Abhimanyu." By naming these youths who are enthusiastically blowing their conch shells, Sanjaya is forcing Dhritarashtra to face the grim reality: his blind attachment to his own sons is going to result in the slaughter of his own grandcen and the complete annihilation of their dynasty.

sa ghoṣo dhārtarāṣṭrāṇāṁ hṛdayāni vyadārayat nabhaś ca pṛthivīṁ caiva tumulo ’bhyanunādayan

When Bhīṣma and the others on the side of Duryodhana blew their respective conchshells, there was no heart-breaking on the part of the Pāṇḍavas. Such occurrences are not mentioned, but in this particular verse it is mentioned that the hearts of the sons of Dhṛtarāṣṭra were shattered by the sounds vibrated by the Pāṇḍavas’ party. This is due to the Pāṇḍavas and their confidence in Lord Kṛṣṇa. One who takes shelter of the Supreme Lord has nothing to fear, even in the midst of the greatest calamity.

atha vyavasthitān dṛṣṭvā dhārtarāṣṭrān kapi-dhvajaḥ pravṛtte śastra-sampāte dhanur udyamya pāṇḍavaḥ hṛṣīkeśaṁ tadā vākyam idam āha mahī-pate

The battle was just about to begin. It is understood from the above statement that the sons of Dhṛtarāṣṭra were more or less disheartened by the unexpected arrangement of military force by the Pāṇḍavas, who were guided by the direct instructions of Lord Kṛṣṇa on the battlefield. The emblem of Hanumān on the flag of Arjuna is another sign of victory because Hanumān cooperated with Lord Rāma in the battle between Rāma and Rāvaṇa, and Lord Rāma emerged victorious. Now both Rāma and Hanumān were present on the chariot of Arjuna to help him. Lord Kṛṣṇa is Rāma Himself, and wherever Lord Rāma is, His eternal servitor Hanumān and His eternal consort Sītā, the goddess of fortune, are present. Therefore, Arjuna had no cause to fear any enemies whatsoever. And above all, the Lord of the senses, Lord Kṛṣṇa, was personally present to give him direction. Thus, all good counsel was available to Arjuna in the matter of executing the battle. In such auspicious conditions, arranged by the Lord for His eternal devotee, lay the signs of assured victory.