Kṛṣṇa consciousness is the highest stage of trance in yoga practice. This very understanding that Kṛṣṇa is present as Paramātmā in everyone's heart makes the yogī faultless. The Vedas (Gopāla-tāpanī Upaniṣad 3.2) confirm this inconceivable potency of the Lord as follows: eko 'pi san bahudhā yo 'vabhāti. "Although the Lord is one, He is present in innumerable hearts as many."
(Bhagavad-Gita-----6:31-----purport).

Bhaktir asya bhajanaṁ tad ihāmutropādhi-nairāsyenāmuṣmin manaḥ-kalpanam, etad eva naiṣkarmyam. "Bhakti means devotional service to the Lord which is free from desire for material profit, either in this life or in the next. Devoid of such inclinations, one should fully absorb the mind in the Supreme. That is the purpose of naiṣkarmya." (Gopāla-tāpanī Upaniṣad 1.15)
(Bhagavad-Gita-----6:47-----purport).

To enter Kṛṣṇa's supreme abode or the innumerable Vaikuṇṭha planets is possible only by bhakti, devotional service, as clearly indicated here by the word bhaktyā. No other process can help one attain that supreme abode. The Vedas (Gopāla-tāpanī Upaniṣad 1.21) also describe the supreme abode and the Supreme Personality of Godhead. Eko vaśī sarva-gaḥ kṛṣṇaḥ. In that abode there is only one Supreme Personality of Godhead, whose name is Kṛṣṇa. He is the supreme merciful Deity, and although situated there as one He has expanded Himself into millions and millions of plenary expansions.
(Bhagavad-Gita-----8:22-----purport).

In the Brahma-saṁhitā it is said that Kṛṣṇa is the supreme controller; there are many controllers undoubtedly, both in the material and spiritual world, but Kṛṣṇa is the supreme controller (īśvaraḥ paramaḥ kṛṣṇaḥ). and His body is sac-cid-ānanda, nonmaterial.
Material bodies cannot perform the wonderful acts described in previous verses. His body is eternal, blissful and full of knowledge. Although He is not a common man, the foolish deride Him and consider Him to be a man. His body is called here mānuṣīm because He is acting just like a man, a friend of Arjuna's, a politician involved in the Battle of Kurukṣetra. In so many ways He is acting just like an ordinary man, but actually His body is sac-cid-ānanda-vigraha (Bs. 5.1)—eternal bliss and knowledge absolute. This is confirmed in the Vedic language also. Sac-cid-ānanda-rūpāya kṛṣṇāya: "I offer my obeisances unto the Supreme Personality of Godhead, Kṛṣṇa, who is the eternal blissful form of knowledge." (Gopāla-tāpanī Upaniṣad 1.1) There are other descriptions in the Vedic language also. Tam ekaṁ govindam: "You are Govinda, the pleasure of the senses and the cows." Sac-cid-ānanda-vigraham: "And Your form is transcendental, full of knowledge, bliss and eternality." (Gopāla-tāpanī Upaniṣad 1.35)
(Bhagavad-Gita-----9:11-----purport).

All Vedic literature agrees that Kṛṣṇa is the source of Brahmā, Śiva and all other demigods. In the Atharva Veda (Gopāla-tāpanī Upaniṣad 1.24) it is said, yo brahmāṇaṁ vidadhāti pūrvaṁ yo vai vedāṁś ca gāpayati sma kṛṣṇaḥ: "It was Kṛṣṇa who in the beginning instructed Brahmā in Vedic knowledge and who disseminated Vedic knowledge in the past."
(Bhagavad-Gita-----10:8-----purport).

In the Vedic literature (Gopāla-tāpanī Upaniṣad 1.1) the following statement appears:
sac-cid-ānanda-rūpāya
kṛṣṇāyākliṣṭa-kāriṇe
namo vedānta-vedyāya
gurave buddhi-sākṣiṇe
"I offer my respectful obeisances unto Kṛṣṇa, who has a transcendental form of bliss, eternity and knowledge. I offer my respect to Him, because understanding Him means understanding the Vedas and He is therefore the supreme spiritual master." Then it is said, kṛṣṇo vai paramaṁ daivatam: "Kṛṣṇa is the Supreme Personality of Godhead." (Gopāla-tāpanī Upaniṣad 1.3) Eko vaśī sarva-gaḥ kṛṣṇa īḍyaḥ: "That one Kṛṣṇa is the Supreme Personality of Godhead, and He is worshipable." Eko 'pi san bahudhā yo 'vabhāti: "Kṛṣṇa is one, but He is manifested in unlimited forms and expanded incarnations." (Gopāla-tāpanī Upaniṣad 1.21)
(Bhagavad-Gita-----11:54-----purport).

In the Gopāla-tāpanī Upaniṣad (śruti) it is said, gopa-veśo me puruṣaḥ purastād āvirbabhuva: the Lord appeared before Brahmā as a cowboy, that is, as the original Personality of Godhead, Lord Śrī Kṛṣṇa, Govinda, who is later described by Brahmājī in his Brahma-saṁhitā (5.29):
cintāmaṇi-prakara-sadmasu kalpa-vṛkṣa-
lakṣāvṛteṣu surabhīr abhipālayantam
lakṣmī-sahasra-śata-sambhrama-sevyamānaṁ
govindam ādi-puruṣaṁ tam ahaṁ bhajāmi
Brahmājī desires to worship the original Personality of Godhead, Lord Śrī Kṛṣṇa, who resides in the topmost Vaikuṇṭha planet, known as Goloka Vṛndāvana, where He is in the habit of keeping surabhi cows as a cowboy and where He is served by hundreds and thousands of goddesses of fortune (the gopīs) with love and respect.
(Srimad Bhagavatam-----2:9:37-----purport).

Śrīla Rūpa Gosvāmī says in his Bhakti-rasāmṛta-sindhu (1.1.11) that pure devotional service is jñāna-karmādy-anāvṛtam: (CC.2:19:167) pure devotional service is without any tinge of speculative knowledge and fruitive activities. Such devotional service is able to award the pure devotee the highest result, namely direct association with the Supreme Personality of Godhead, Lord Kṛṣṇa. According to the Gopāla-tāpanī Upaniṣad, the Lord showed one of the many thousands of petals of His lotus feet. It is said: brāhmaṇo'sāv anavarataṁ me dhyātaḥ stutaḥ parārdhānte so 'budhyata gopa-veśo me purastāt āvirbabhūva. After penetrating for millions of years, Lord Brahmā could understand the transcendental form of the Lord as Śrī Kṛṣṇa, in the dress of a cowherd boy, and thus he recorded his experience in the Brahma-saṁhitā in the famous prayer, govindam ādi-puruṣaṁ tam ahaṁ bhajāmi
(Srimad Bhagavatam-----3:8:26-----purport).

The rāsa dance is performed by Lord Kṛṣṇa in the company of the cowherd damsels at Vṛndāvana, and the Personality of Godhead Garbhodakaśāyī Viṣṇu is also engaged in rāsa enjoyment with His external potency, by which He creates, maintains and dissolves the entire material manifestation. Indirectly, Lord Brahmā offers his respectful obeisances unto Lord Śrī Kṛṣṇa, who is factually ever engaged in rāsa enjoyment with the gopīs, as confirmed in the Gopāla-tāpanī Upaniṣad in the following words: parārdhānte so 'budhyata gopa-veśo me puruṣaḥ purastād āvirbabhūva. The distinction between the Lord and the living entity is definitely experienced when there is sufficient intelligence to understand His internal potency, as distinguished from the external potency by which He makes possible the material manifestation.
(Srimad Bhagavatam-----3:9:14-----purport).

The Gopāla-tāpanī Upaniṣad says that the word bhakti means engagement in the devotional service of the Supreme Personality of Godhead, not of anyone else. This Upaniṣad describes that bhakti is the offering of devotional service unto the Supreme Personality of Godhead. To perform devotional service, one should be relieved of the bodily conception of life and aspirations to be happy through elevation to the higher planetary systems.
(Srimad Bhagavatam-----7:5:23-----purport).

The Gopāla-tāpanī Upaniṣad (15) says, bhaktir asya bhajanaṁ tad ihāmutropādhi-nairāsyenaivāmuṣmin manasaḥ kalpanam etad eva ca naiṣkarmyam. This is a definition of naiṣkarmya. One acts in naiṣkarmya when he fully engages in Kṛṣṇa conscious activities without material desires to enjoy, either here or in the upper planetary systems, in the present life or in a future life (iha-amutra). Anyābhilāṣitā-śūnyam (Bhakti-rasāmṛta-sindhu 1.1.11). When one is freed from all contamination and he acts in devotional service under the direction of the spiritual master, one is on the platform of naiṣkarma. By such transcendental devotional service, the Lord is served. I offer my respectful obeisances unto Him.
(Srimad Bhagavatam-----8:3:11-----purport).

The word klīm added to the gāyatrī mantra is explained in Brahma-saṁhitā as the transcendental seed of love of Godhead, or the seed of the kāma-gāyatrī. The object is Kṛṣṇa, who is the ever green Cupid, and by utterance of klīm mantra Kṛṣṇa is worshiped. It is also stated in the Gopāla-tāpanī Upaniṣad that when Kṛṣṇa is spoken of as Cupid, one should not think of Him as the Cupid of this material world. As already explained, Vṛndāvana is the spiritual abode of Kṛṣṇa, and the word Cupid is also spiritual and transcendental. One should not take the material Cupid and Kṛṣṇa to be on the same level.
(Teachings of Lord Caitanya).

"Because You are the original person, You are described in the Gopāla-tāpanī Upaniṣad, as well as in the Brahma-saṁhitā, as govindam ādi-puruṣam. Govinda is the original person, the cause of all causes."
(Krsna Book).

"A person with a poor fund of knowledge concludes that Your appearance and pastimes are simply material designations. You are transcendental to both nescience and knowledge, as it is confirmed in the Gopāla-tāpanī Upaniṣad. You are the original amṛta (indestructible nectar of immortality). As confirmed in the Vedas, amṛtaṁ śāśvataṁ brahma. Brahman is the eternal, the supreme origin of everything, who has no birth or death."
(Krsna Book).

If we want to put an end to this process of repeated birth and death, as well as the concomitant factors of old age and disease, we must try to enter the spiritual planets, where we can live eternally in the association of Lord Kṛṣṇa or His plenary expansions, His Nārāyaṇa forms. Lord Kṛṣṇa or His plenary expansions dominate every one of these innumerable planets, a fact confirmed in the śruti mantras: eko vaśī sarva-gaḥ kṛṣṇa īḍyaḥ/ eko 'pi san bahudhā yo 'vabhāti. (Gopāla-tāpanī Upaniṣad 1.21)
(Sri Isopanishad).

In the Bhagavad-gītā (B.G.10:8) the Lord says,
ahaṁ sarvasya prabhavo
mattaḥ sarvaṁ pravartate
iti matvā bhajante māṁ
budhā bhāva-samanvitāḥ
"I am the source of all spiritual and material worlds. Everything emanates from Me. The wise who perfectly know this engage in My devotional service and worship Me with all their hearts."
Here is a correct description of the Supreme Lord, given by the Lord Himself. The words sarvasya pra-bhavaḥ indicate that Kṛṣṇa is the creator of everyone, including Brahmā, Viṣṇu and Śiva. And because these three principal deities of the material world are created by the Lord, the Lord is the creator of all that exists in the material and spiritual worlds. In the Atharva Veda (Gopāla-tāpanī Upaniṣad 1.24) it is similarly said, "He who existed before the creation of Brahmā and who enlightened Brahmā with Vedic knowledge is Lord Śrī Kṛṣṇa."
(Sri Isopanishad).