He began to make extensive arrangements to attack the kingdom of Mathurā with his innumerable military phalanxes, consisting of many thousands of chariots, horses, elephants and infantry soldiers. Jarāsandha prepared thirteen such military phalanxes to retaliate the death of Kaṁsa. Taking with him all his military strength, he attacked the capital of the Yadu kings, Mathurā, surrounding it from all directions. Śrī Kṛṣṇa, who appeared like an ordinary human being, saw the immense strength of Jarāsandha, which appeared like an ocean about to cover a beach at any moment. He also perceived that the inhabitants of Mathurā were overwhelmed with fear. He began to think within Himself about His mission as an incarnation and how to tackle the present situation before Him. He thought that since He was not going to conquer the kingdom of Magadha, to kill the King of Magadha, namely Jarāsandha, was useless. His mission was to diminish the overburdening population of the whole world; therefore He took the opportunity to face so many men, chariots, elephants and horses. The military strength of Jarāsandha had appeared before Him, and He decided to kill the entire force of Jarāsandha so that he would go back and reorganize his military strength.
While Lord Kṛṣṇa was thinking in that way, two beautiful chariots, fully equipped with drivers, weapons, flags and other paraphernalia, arrived for Him from outer space. Kṛṣṇa saw the two chariots present before Him and immediately addressed His elder brother, Balarāma, who is also known as Saṅkarṣaṇa: “My dear elder brother, best among the Āryans, You are the Lord of the universe, and, specifically, You are the protector of the Yadu dynasty. The members of the Yadu dynasty sense great danger before the soldiers of Jarāsandha, and they are very much aggrieved. Just to give them protection, Your chariot is also here, filled with weapons. I request You to sit on Your chariot and kill all these soldiers, the entire military strength of the enemy. The two of Us have descended to this earth just to annihilate such unnecessary bellicose forces and give protection to the pious devotees. So we have the opportunity to fulfill Our mission. Please let Us execute it.” Thus Kṛṣṇa and Balarāma, the descendants of Daśārha, decided to annihilate the thirteen military companies of Jarāsandha.
After equipping Themselves with military dress, Kṛṣṇa and Balarāma mounted Their chariots. Kṛṣṇa rode the chariot of which Dāruka was the driver. With a small army They came out of the city of Mathurā, blowing Their respective conchshells. Curiously enough, although the other party was equipped with greater military strength, when they heard the vibration of Kṛṣṇa’s conchshell their hearts were shaken. When Jarāsandha saw Balarāma and Kṛṣṇa, he was a little bit compassionate because They happened to be related to him as grandsons. He specifically addressed Kṛṣṇa as puruṣādhama, meaning “the lowest among men.” Actually Kṛṣṇa is known in all Vedic scriptures as Puruṣottama, the highest among men. Jarāsandha had no intention of addressing Kṛṣṇa as Puruṣottama, but great scholars have determined the true meaning of the word puruṣādhama to be “one who makes all other personalities go downward.” Actually no one can be equal to or greater than the Supreme Personality of Godhead.
Jarāsandha said, “It will be a great dishonor for me to fight with boys like Kṛṣṇa and Balarāma.” Because Kṛṣṇa had killed Kaṁsa, Jarāsandha specifically addressed Him as the killer of His own relatives. Kaṁsa had killed many of his own nephews, yet Jarāsandha did not take notice, but because Kṛṣṇa had killed His maternal uncle, Kaṁsa, Jarāsandha tried to criticize Him. That is the way of demoniac dealings. Demons do not try to find their own faults or those of their friends, but try to find the faults of their enemies. Jarāsandha also criticized Kṛṣṇa for not even being a kṣatriya. Because He was raised by Mahārāja Nanda, Kṛṣṇa was not a kṣatriya but a vaiśya. Vaiśyas are generally called guptas, and the word gupta can also be used to mean “hidden.” So Kṛṣṇa was both hidden and raised by Nanda Mahārāja. Jarāsandha accused Kṛṣṇa of three faults: that He killed His own maternal uncle, that He was not even a kṣatriya, and that He was hidden in His childhood. And therefore Jarāsandha felt ashamed to fight with Him.