We shall find, therefore, in this Bhagavad-gītā that the complete whole is comprised of the supreme controller, the controlled living entities, the cosmic manifestation, eternal time and karma, or activities, and all of these are explained in this text. All of these taken completely form the complete whole, and the complete whole is called the Supreme Absolute Truth. The complete whole and the complete Absolute Truth are the complete Personality of Godhead, Śrī Kṛṣṇa. All manifestations are due to His different energies. He is the complete whole.
It is also explained in the Gītā that impersonal Brahman is also subordinate to the complete Supreme Person (brahmaṇo hi pratiṣṭhāham). Brahman is more explicitly explained in the Brahma-sūtra to be like the rays of the sunshine. The impersonal Brahman is the shining rays of the Supreme Personality of Godhead. Impersonal Brahman is incomplete realization of the absolute whole, and so also is the conception of Paramātmā. In the Fifteenth Chapter it shall be seen that the Supreme Personality of Godhead, Puruṣottama, is above both impersonal Brahman and the partial realization of Paramātmā. The Supreme Personality of Godhead is called sac-cid-ānanda-vigraha. The Brahma-saṁhitā begins in this way: īśvaraḥ paramaḥ kṛṣṇaḥ sac-cid-ānanda-vigrahaḥ/ anādir ādir govindaḥ sarva-kāraṇa-kāraṇam. "Govinda, Kṛṣṇa, is the cause of all causes. He is the primal cause, and He is the very form of eternity, knowledge and bliss." Impersonal Brahman realization is the realization of His sat (eternity) feature. Paramātmā realization is the realization of sat-cit (eternal knowledge). But realization of the Personality of Godhead, Kṛṣṇa, is realization of all the transcendental features: sat, cit and ānanda (eternity, knowledge, and bliss) in complete vigraha (form).