In the Vedas—in the Kaṭha Upaniṣad as well as in the Śvetāśvatara Upaniṣad—it is said that the Supreme Personality of Godhead is the maintainer of innumerable living entities, in terms of their different situations according to individual work and reaction of work. That Supreme Personality of Godhead is also, by His plenary portions, alive in the heart of every living entity. Only saintly persons who can see, within and without, the same Supreme Lord can actually attain to perfect and eternal peace.
(Bhagavad-Gita-----2:12-----purport).

Forgetfulness of this relationship by the atomic soul is the cause of one's changing his position from one tree to another, or from one body to another. The jīva soul is struggling very hard on the tree of the material body, but as soon as he agrees to accept the other bird as the supreme spiritual master—as Arjuna agreed to do by voluntary surrender unto Kṛṣṇa for instruction—the subordinate bird immediately becomes free from all lamentations. Both the Muṇḍaka Upaniṣad (3.1.2) and Śvetāśvatara Upaniṣad (4.7) confirm this:
samāne vṛkṣe puruṣo nimagno
'nīśayā śocati muhyamānaḥ
juṣṭaṁ yadā paśyaty anyam īśam
asya mahimānam iti vīta-śokaḥ
"Although the two birds are in the same tree, the eating bird is fully engrossed with anxiety and moroseness as the enjoyer of the fruits of the tree. But if in some way or other he turns his face to his friend who is the Lord and knows His glories—at once the suffering bird becomes free from all anxieties." Arjuna has now turned his face towards his eternal friend, Kṛṣṇa, and is understanding the Bhagavad-gītā from Him. And thus, hearing from Kṛṣṇa, he can understand the supreme glories of the Lord and be free from lamentation.
(Bhagavad-Gita-----2:22-----purport).

"He does not possess a bodily form like that of an ordinary living entity. There is no difference between His body and His soul. He is absolute. All His senses are transcendental. Any one of His senses can perform the action of any other sense. Therefore, no one is greater than Him or equal to Him. His potencies are multifarious, and thus His deeds are automatically performed as a natural sequence." (Śvetāśvatara Upaniṣad 6.7-8)
Since everything is in full opulence in the Personality of Godhead and is existing in full truth, there is no duty for the Supreme Personality of Godhead to perform. One who must receive the results of work has some designated duty, but one who has nothing to achieve within the three planetary systems certainly has no duty. And yet Lord Kṛṣṇa is engaged on the Battlefield of Kurukṣetra as the leader of the kṣatriyas because the kṣatriyas are duty-bound to give protection to the distressed. Although He is above all the regulations of the revealed scriptures, He does not do anything that violates the revealed scriptures.
(Bhagavad-Gita-----3:22-----purport).

"One can attain the perfect stage of liberation from birth and death simply by knowing the Lord, the Supreme Personality of Godhead, and there is no other way to achieve this perfection." (Śvetāśvatara Upaniṣad 3.8) That there is no alternative means that anyone who does not understand Lord Kṛṣṇa as the Supreme Personality of Godhead is surely in the mode of ignorance and consequently he will not attain salvation simply, so to speak, by licking the outer surface of the bottle of honey, or by interpreting the Bhagavad-gītā according to mundane scholarship. Such empiric philosophers may assume very important roles in the material world, but they are not necessarily eligible for liberation. Such puffed-up mundane scholars have to wait for the causeless mercy of the devotee of the Lord. One should therefore cultivate Kṛṣṇa consciousness with faith and knowledge, and in this way attain perfection.
(Bhagavad-Gita-----4:9-----purport).

"The Supreme Personality of Godhead, who is living within the body of a living entity, is the controller of all living entities all over the universe. The body consists of nine gates (two eyes, two nostrils, two ears, one mouth, the anus and the genitals). The living entity in his conditioned stage identifies himself with the body, but when he identifies himself with the Lord within himself, he becomes just as free as the Lord, even while in the body." (Śvetāśvatara Upaniṣad 3.18)
Therefore, a Kṛṣṇa conscious person is free from both the outer and inner activities of the material body.
(Bhagavad-Gita-----5:13-----purport).

The conditioned souls within the clutches of the illusory energy are all anxious to attain peace in the material world. But they do not know the formula for peace, which is explained in this part of the Bhagavad-gītā. The greatest peace formula is simply this: Lord Kṛṣṇa is the beneficiary in all human activities. Men should offer everything to the transcendental service of the Lord because He is the proprietor of all planets and the demigods thereon. No one is greater than He. He is greater than the greatest of the demigods, Lord Śiva and Lord Brahmā. In the Vedas (Śvetāśvatara Upaniṣad 6.7) the Supreme Lord is described as tam īśvarāṇāṁ paramaṁ maheśvaraṁ. Under the spell of illusion, living entities are trying to be lords of all they survey, but actually they are dominated by the material energy of the Lord.
(Bhagavad-Gita-----5:29-----purport).

A consummate yogī, who is perfect in understanding Lord Kṛṣṇa, as is clearly stated herein by the Lord Himself (mat-cittaḥ, mat-paraḥ, mat-sthānam), can attain real peace and can ultimately reach His supreme abode, Kṛṣṇaloka, known as Goloka Vṛndāvana. In the Brahma-saṁhitā (5.37) it is clearly stated, goloka eva nivasaty akhilātma-bhūtaḥ: the Lord, although residing always in His abode called Goloka, is the all-pervading Brahman and the localized Paramātmā as well by dint of His superior spiritual energies. No one can reach the spiritual sky (Vaikuṇṭha) or enter into the Lord's eternal abode (Goloka Vṛndāvana) without the proper understanding of Kṛṣṇa and His plenary expansion Viṣṇu. Therefore a person working in Kṛṣṇa consciousness is the perfect yogī, because his mind is always absorbed in Kṛṣṇa's activities (sa vai manaḥ kṛṣṇa-pādāravindayoḥ (S.B.9:4:18). In the Vedas also (ŚvetāśvataraUpaniṣad 3.8) we learn, tam eva viditvāti mṛtyum eti: "One can overcome the path of birth and death only by understanding the Supreme Personality of Godhead, Kṛṣṇa." In other words, perfection of the yoga system is the attainment of freedom from material existence and not some magical jugglery or gymnastic feats to befool innocent people.
(Bhagavad-Gita-----6:15-----purport).

These authorities leave no doubt that the Absolute Truth is the Supreme Person, the cause of all causes. The impersonalist, however, argues on the strength of the Vedic version given in the Śvetāśvatara Upaniṣad (3.10): tato yad uttarataraṁ tad arūpam anāmayam/ ya etad vidur amṛtās te bhavanti athetare duḥkham evāpiyanti. "In the material world Brahmā, the primeval living entity within the universe, is understood to be the supreme amongst the demigods, human beings and lower animals. But beyond Brahmā there is the Transcendence, who has no material form and is free from all material contaminations. Anyone who can know Him also becomes transcendental, but those who do not know Him suffer the miseries of the material world."
(Bhagavad-Gita-----7:7-----purport).

Consequently, his release from the clutches of material nature is very difficult, even though that material nature is an inferior energy, because material energy is ultimately conducted by the supreme will, which the living entity cannot overcome. Inferior, material nature is defined herein as divine nature due to its divine connection and movement by the divine will. Being conducted by divine will, material nature, although inferior, acts so wonderfully in the construction and destruction of the cosmic manifestation. The Vedas confirm this as follows: māyāṁ tu prakṛtiṁ vidyān māyinaṁ tu maheśvaram. "Although māyā (illusion) is false or temporary, the background of māyā is the supreme magician, the Personality of Godhead, who is Maheśvara, the supreme controller." (Śvetāśvatara Upaniṣad 4.10)
(Bhagavad-Gita-----7:14-----purport).

The words mām eva are also significant. Mām means unto Kṛṣṇa (Viṣṇu) only, and not Brahmā or Śiva. Although Brahmā and Śiva are greatly elevated and are almost on the level of Viṣṇu, it is not possible for such incarnations of rajo-guṇa (passion) and tamo-guṇa (ignorance) to release the conditioned soul from the clutches of māyā. In other words, both Brahmā and Śiva are also under the influence of māyā. Only Viṣṇu is the master of māyā; therefore He alone can give release to the conditioned soul. The Vedas (Śvetāśvatara Upaniṣad 3.8) confirm this in the phrase tam eva viditvā, or "Freedom is possible only by understanding Kṛṣṇa." Even Lord Śiva affirms that liberation can be achieved only by the mercy of Viṣṇu. Lord Śiva says, mukti-pradātā sarveṣāṁ viṣṇur eva na saṁśayaḥ: "There is no doubt that Viṣṇu is the deliverer of liberation for everyone."
(Bhagavad-Gita-----7:14-----purport).

The Brahma-saṁhitā (5.37) also confirms that although the Lord is always in the supreme abode, Goloka Vṛndāvana, He is all-pervading, so that everything is going on nicely (goloka eva nivasaty akhilātma-bhūtaḥ). As stated in the Vedas (Śvetāśvatara Upaniṣad 6.8), parāsya śaktir vividhaiva śrūyate/ svābhāvikī jñāna-bala-kriyā ca: (Cc. Madhya 13.65, purport) His energies are so expansive that they systematically conduct everything in the cosmic manifestation without a flaw, although the Supreme Lord is far, far away.
(Bhagavad-Gita-----8:22-----purport).

The Lord is being paid obeisances in all respects. He is of immeasurable greatness. No one can be greater than the Supreme Personality of Godhead, Kṛṣṇa, because no one is equal to or higher than Kṛṣṇa within any manifestation, spiritual or material. Everyone is below Him. No one can excel Him. This is stated in the Śvetāśvatara Upaniṣad (6.8):
na tasya kāryaṁ karaṇaṁ ca vidyate
na tat-samaś cābhyadhikaś ca dṛśyate
The Supreme Lord, Kṛṣṇa, has senses and a body like the ordinary man, but for Him there is no difference between His senses, His body, His mind and Himself. Foolish persons who do not perfectly know Him say that Kṛṣṇa is different from His soul, mind, heart and everything else. Kṛṣṇa is absolute; therefore His activities and potencies are supreme. It is also stated that although He does not have senses like ours, He can perform all sensory activities; therefore His senses are neither imperfect nor limited. No one can be greater than Him, no one can be equal to Him, and everyone is lower than Him.
(Bhagavad-Gita-----11:43-----purport).

So if one gives some amount of his money to persons involved in distributing Kṛṣṇa consciousness, that charity, given to spread Kṛṣṇa consciousness, is the greatest charity in the world. And if one worships as prescribed in the temple (in the temples in India there is always some statue, usually of Viṣṇu or Kṛṣṇa), that is a chance to progress by offering worship and respect to the Supreme Personality of Godhead. For the beginners in devotional service to the Lord, temple worship is essential, and this is confirmed in the Vedic literature (Śvetāśvatara Upaniṣad6.23):
yasya deve parā bhaktir
yathā deve tathā gurau
tasyaite kathitā hy arthāḥ
prakāśante mahātmanaḥ
(ŚU 6.23)
One who has unflinching devotion for the Supreme Lord and is directed by the spiritual master, in whom he has similar unflinching faith, can see the Supreme Personality of Godhead by revelation. One cannot understand Kṛṣṇa by mental speculation. For one who does not take personal training under the guidance of a bona fide spiritual master, it is impossible to even begin to understand Kṛṣṇa. The word tu is specifically used here to indicate that no other process can be used, can be recommended, or can be successful in understanding Kṛṣṇa.
(Bhagavad-Gita-----11:54-----purport).