Nanda Mahārāja returned to Vṛndāvana without Kṛṣṇa and Balarāma. He was accompanied only by the cowherd boys and men. It was certainly a very pathetic scene for the gopīs, mother Yaśodā, Śrīmatī Rādhārāṇī and all the other residents of Vṛndāvana. Many devotees have tried to make adjustments to Kṛṣṇa's being away from Vṛndāvana because, according to expert opinion, Kṛṣṇa, the original Supreme Personality of Godhead, never goes even a step out of Vṛndāvana. He always remains there. The explanation of expert devotees is that Kṛṣṇa was actually not absent from Vṛndāvana; He came back with Nanda Mahārāja as promised.
(Krsna Book).

Kṛṣṇa and Balarāma remained in Mathurā not in Their original forms but in Their expansions as Vasudeva and Saṅkarṣaṇa. The real Kṛṣṇa and Balarāma were in Vṛndāvana in Their bhāva manifestation, whereas in Mathurā They appeared in the prabhava and vaibhava expansions. This is the expert opinion of advanced devotees of Kṛṣṇa. Externally, however, They were absent from Vṛndāvana. Therefore, when Nanda Mahārāja was preparing to return to Vṛndāvana, there was some discussion between him and the boys concerning how they could live in separation. The conclusion to separate was reached by mutual agreement.
(Krsna Book).

Vasudeva and Devakī, who happened to be the real parents of Kṛṣṇa and Balarāma, wanted to keep Them now because of the death of Kaṁsa. While Kaṁsa was alive, Kṛṣṇa and Balarāma were kept under the protection of Nanda Mahārāja in Vṛndāvana. Now, naturally, the father and mother of Kṛṣṇa and Balarāma wanted Them to remain, specifically for the reformatory function of purification, the sacred thread ceremony. They also wanted to give Them a proper education, for this is the duty of the father.
(Krsna Book).

That Kṛṣṇa and Balarāma did not return to Vṛndāvana can be adjusted as follows: They did not break Their promise to return to Vṛndāvana, nor were They absent, but Their presence was necessary in Mathurā.
(Krsna Book).

Uddhava entered the house of Nanda Mahārāja and was received as a representative of Vāsudeva. Nanda Mahārāja offered him a sitting place and sat down with him to ask about messages from Kṛṣṇa, Balarāma and other family members in Mathurā. He could understand that Uddhava was a very confidential friend of Kṛṣṇa's and therefore must have come with good messages. "My dear Uddhava," he said, “how is my friend Vasudeva enjoying life? He is now released from the prison of Kaṁsa, and he is now with his friends and his children, Kṛṣṇa and Balarāma. So he must be very happy. Tell me about him and his welfare. We are also very happy that Kaṁsa, the most sinful demon, has been killed. He was always envious of the family of the Yadus, his relatives. Now, because of his sinful activities, he is dead and gone, along with all his brothers.
(Krsna Book).

“We think, therefore, that Kṛṣṇa and Balarāma may be chief demigods in heaven who have appeared before us like ordinary boys to execute particular duties on earth. This was foretold by Garga Muni when making Kṛṣṇa's horoscope. If Kṛṣṇa were not a great personality, how could He have killed Kaṁsa, who possessed the strength of ten thousand elephants? Besides Kaṁsa, there were the very strong wrestlers, as well as the giant elephant Kuvalayāpīḍa.
(Krsna Book).

Uddhava continued: "Balarāma and Kṛṣṇa are the original Personalities of Godhead, from whom the cosmic manifestation emanates. They are chief among all personalities. Each of Them is both the material and the efficient cause of this material creation. Material nature is conducted by the puruṣa incarnations, who all act under Kṛṣṇa andBalarāma. By Their partial representation They enter the hearts of all living entities. They are the source of all knowledge and all forgetfulness also."
(Krsna Book).

The Brahman effulgence is only the bodily rays of Nārāyaṇa, and because you are always absorbed in ecstatic thought of Kṛṣṇa and Balarāma, what pious activity remains for you to perform? I have brought a message from Kṛṣṇa that He will very soon come back to Vṛndāvana and satisfy you by His personal presence. Kṛṣṇa promised that He would come back to Vṛndāvana after finishing His business in Mathurā. This promise He will surely fulfill. I therefore request the two of you, who are the best among all who are fortunate, not to be aggrieved on account of Kṛṣṇa's absence.
(Krsna Book).

We wrongly look upon Kṛṣṇa and Balarāma as ordinary human beings, just as whirling men see the whole world whirling around them. The Personality of Godhead is no one's son; He is actually everyone's father, mother and supreme controller. There is no doubt of this. Whatever is already being experienced, whatever is not being experienced, whatever already exists, does not exist or will exist in the future, whatever is the smallest and whatever is the biggest have no existence outside the Supreme Personality of Godhead. Everything rests in Him, but He is untouched by everything manifested.
(Krsna Book).

My dear Uddhava, Vṛndāvana is the land of rivers, forests and cows. Here the vibration of the flute was heard, and Kṛṣṇa, along with His elder brother, Śrī Balarāma, enjoyed the atmosphere in our company. Thus the environment of Vṛndāvana constantly reminds us of Kṛṣṇa and Balarāma. On the land of Vṛndāvana are the impressions of His footprints, the residence of the goddess of fortune, and because of such signs we cannot forget Kṛṣṇa.
(Krsna Book).

The gopīs further expressed that Vṛndāvana was still full of all opulence and good fortune; there was no scarcity or want in Vṛndāvana as far as material necessities were concerned. But in spite of such opulence they could not forget Kṛṣṇa and Balarāma.
(Krsna Book).

When Uddhava had been sufficiently honored and worshiped by the pure devotees of Vṛndāvana, he returned to Mathurā and to his master, Kṛṣṇa. After offering respects by bowing down before Lord Kṛṣṇa and Balarāma, he described the wonderful devotional life of the inhabitants of Vṛndāvana. Then he presented to Vasudeva, Kṛṣṇa's father, and Ugrasena, Kṛṣṇa's grandfather, all the gifts given by the inhabitants of Vṛndāvana.
(Krsna Book).

After a while, Kṛṣṇa fulfilled His promise to visit Akrūra at his house. Akrūra was in relationship with Kṛṣṇa as His servitor, and Kṛṣṇa wanted to get some service from him. He went there accompanied by Lord Balarāma and Uddhava. When Kṛṣṇa, Balarāma and Uddhava approached the house of Akrūra, Akrūra came forward, embraced Uddhava and offered respectful obeisances, bowing down before Lord Kṛṣṇa and Balarāma. Kṛṣṇa, Balarāma and Uddhava offered him obeisances in turn and were offered appropriate sitting places. When all were comfortably seated, Akrūra washed their feet and sprinkled the water on his head. Then he offered nice clothing, flowers and sandalwood pulp in regular worship. All three of them were very satisfied by Akrūra's behavior. Akrūra then bowed down before Kṛṣṇa, putting his head on the ground. Then, placing Kṛṣṇa's lotus feet on his lap, Akrūra gently began to massage them. When Akrūra was fully satisfied in the presence of Kṛṣṇa and Balarāma, his eyes filled with tears of love for Kṛṣṇa, and he began to offer his prayers as follows.
(Krsna Book).

“My dear Lord Kṛṣṇa and Balarāma, it is very kind of You to have killed Kaṁsa and his associates. You have delivered the whole family of the Yadu dynasty from the greatest calamity. The Yadus will always remember Your saving of their great dynasty. My dear Lord Kṛṣṇa and Balarāma, both of You are the original personality from whom everything has emanated, the original cause of all causes. You have inconceivable energy, and You are all-pervasive. There is no cause and effect, gross or subtle, but You. You are the Supreme Brahman realized through the study of the Vedas.
(Krsna Book).

My dear Lord Kṛṣṇa, this time You have appeared in the home of Vasudeva as His son, with Your plenary expansion, Śrī Balarāma. Your mission is to kill all the atheistic royal families and destroy their huge military strength. You have advented Yourself to minimize the burden of the world, and to fulfill this mission You have glorified the dynasty of Yadu by appearing as one of its members.

The five Pāṇḍavas are the sons of King Pāṇḍu, but Dhṛtarāṣṭra, due to Duryodhana's plans and designs, is not favorably disposed toward them. Kindly go there and study how Dhṛtarāṣṭra is dealing with the Pāṇḍavas. On receipt of your report, I shall consider how to favor them.” In this way the Supreme Personality of Godhead, Kṛṣṇa, ordered Akrūra to go to Hastināpura, and then He returned home, accompanied by Balarāma and Uddhava.
as one of its members.