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अहमात्मा गुडाकेश सर्वभूताशयस्थित |
अहमादिश्च मध्यं च भूतानामन्त एव च || 20||
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10.20
O Arjun, I am seated in the heart of all living entities. I am the beginning, middle, and end of all beings.

Shree Krishna declares that he is not far from the soul—in fact he is closer than the closest. The
ātmā
or eternal soul is enthroned in the etheric heart of all living beings. The Vedas state
ya ātmani tiṣhṭhati
[v21] “God is seated within our soul.” Seated inside, he grants the power of consciousness and eternality to the soul. If he were to subtract his power, our soul itself would become insentient and perish. We souls are thus eternal and sentient, not by our own power, but because the supremely sentient and eternal God is seated within, and is granting his powers to us. Hence, Shree Krishna declares that he is situated in the heart of all living beings.
Our soul is the body of God, who is the Soul of our soul. The Bhāgavatam states
harirhi sākṣhādbhagavān śharīriṇāmātmā jhaṣhāṇāmiva toyamīpsitam
(5.18.13)[v22]
“God is the
ātmā
of the
ātmā
(Soul of the soul) of all living beings.” In the Bhāgavatam again, when Shukadev described how the
gopīs
used to leave their own children to go and see baby Shree Krishna, Parikshit asked him how this was possible
brahman parodbhave kṛiṣhṇe iyān premā kathaṁ bhavet
(10.14.49)[v23]
“O Brahmin, all mothers are attached to their own children. How did the
gopīs
develop such intense attachment to Shree Krishna, which they did not even feel toward their own child?” Shukadev replied
kṛiṣhṇamenamavehi tvamātmānamakhilātmanām
(Bhāgavatam 10.14.55)[v24]
“Please understand that Lord Krishna is the Supreme Soul of all living beings in the universe. For the benefit of humankind, he has appeared in a human form by his
Yogmaya
power.”
Shree Krishna further states that he is the beginning, middle, and end of all living beings. They have emanated from him, and so he is their beginning. All life that exists in creation is sustained by his energy, and so he is the middle. And those who attain liberation go to his divine abode to live eternally with him. Hence, God is also the end of all living beings. Amongst the various definitions of God given by the Vedas, one of them is
yato vā imāni bhūtāni jāyante yena jātāni jīvanti, yatprayantyabhisaṁviśhanti
(Taittirīya Upaniṣhad 3.1.1)[v25]
“God is he from whom all living beings have emanated; God is he within whom all living beings are situated; God is he into whom all living beings shall unite.”