Therefore we shall find in this Bhagavad-gītā that the complete whole, comprising the supreme controller, the controlled living entities, the cosmic manifestation, the eternal time, and the activities, all of them are completely explained. So the whole thing taking together completely is called the Absolute Truth. The complete whole, or the Supreme Absolute Truth, is therefore the complete Personality of Godhead Śrī Kṛṣṇa. As I have explained, that the manifestation are due to His different energies, and He is the complete whole.
The impersonal Brahman is explained in the Bhagavad-gītā that impersonal Brahman is also subordinate to the complete person. Brahmaṇo 'haṁ pratiṣṭhā (BG 14.27). Impersonal Brahman is also. It is... The impersonal Brahman is more explicitly explained in the Brahma-sūtra as the rays. As there is the rays of the sunshine, sun planet, similarly, the impersonal Brahman is the shining rays of the Supreme Brahman or the Supreme Personality of Godhead. Therefore impersonal Brahman is incomplete realization of the absolute complete whole, and so also the conception of Paramātmā. These things are also explained. Puruṣottama-yoga. When we shall read the chapter of Puruṣottama-yoga it will be seen that the Supreme Personality, Puruṣottama, is above the impersonal Brahman and partial realization of Paramātmā.
The Supreme Personality of Godhead is called sac-cid-ānanda-vigrahaḥ (Bs. 5.1). In the Brahma-saṁhitā, the beginning is started like this: īśvaraḥ paramaḥ kṛṣṇaḥ sac-cid-ānanda-vigrahaḥ/ anādir ādir govindaḥ sarva-kāraṇa-kāraṇam (Bs. 5.1)." Govinda, Kṛṣṇa, is the cause of all causes. He is the primal Lord." So the Supreme Personality of Godhead is sac-cid-ānanda-vigrahaḥ. Impersonal Brahman realization is the realization of His sat part, eternity. And Paramātmā realization is the realization of sat-cit, eternal knowledge part realization. But realization of the Personality of Godhead as Kṛṣṇa is realization of all the transcendental features like sat, cit, and ānanda, in complete vigraha. Vigraha means form. Vigraha means form. Avyaktaṁ vyaktim āpannaṁ manyante mām abuddhayaḥ (BG 7.24). People with less intelligence, they consider the Supreme Truth as impersonal, but He is a person, a transcendental person. This is confirmed in all Vedic literature. Nityo nityānāṁ cetanaś cetanānām (Kaṭha Upaniṣad 2.2.13). So, as we are also persons, individual living beings, we are persons, we have got our individuality, we are all individual, similarly the Supreme Truth, the Supreme Absolute, He is also, at the ultimate issue He is a person. But realization of the Personality of Godhead is realization of all the transcendental features like sat, cit, and ānanda, in complete vigraha. Vigraha means form. Therefore the complete whole is not formless. If He is formless or if He is less in any other thing, He cannot be complete whole. The complete whole must have everything within our experience and beyond our experience. Otherwise He cannot be complete. The complete whole Personality of Godhead has immense potencies. Parāsya śaktir vividhaiva śrūyate (Cc. Madhya 13.65, purport). That is also explained in Bhagavad-gītā, how He is acting in different potencies. This phenomenal world, or the material world, where we are now put, is also complete by itself because pūrṇam idam (Īśopaniṣad, Invocation). The 24 elements of which, according to Sāṅkhya philosophy, the 24 elements of which this material universe is a temporary manifestation, are completely adjusted to produce complete things which are necessary for the maintenance and subsistence of this universe. No extraneous effort by any other unit is required for the maintenance of the universe. It's at its own time, fixed up by the energy of the complete whole, and when the time is complete, these temporary manifestations will be annihilated by the complete arrangement of the complete. There is complete facility for the small complete units, namely, the living entities, to realize the complete. And all sorts of incompleteness is experienced on account of incomplete knowledge of the complete. So the Bhagavad-gītā is the complete knowledge of the Vedic wisdom.