sva yaṁ-rūpa, tad-ekātma-rūpa, āveśa--nāma
prathamei tina-rūpe rahena bhagavān
sva yam-rūpa—the personal form; tat-ekātma-rūpa—the same form, nondifferent from svayaṁ-rūpa; āveśa—especially empowered; nāma—named; prathamei—in the beginning; tina-rūpe—in three forms; rahena—remains; bhagavān—the Supreme Personality of Godhead.
"The Supreme Personality of Godhead exists in three principal forms-svayaṁ-rūpa, tad-ekātma-rūpa, and āveśa-rūpa.
Śrīla Rūpa Gosvāmī has described svayaṁ-rūpa in his Laghu-bhāgavatāmṛta, pūrva-khaṇḍa, verse 12, ananyāpekṣi yad rūpaṁ svayaṁ-rūpaḥ sa ucyate: the original form of the Supreme Personality of Godhead does not depend on other forms. The original form is called svayaṁ-rūpa, and it is described in Śrīmad-Bhāgavatam: kṛṣṇas tu bhagavān svayam (1.3.28). Kṛṣṇa's original form as a cowherd boy in Vṛndāvana is called svayaṁ-rūpa. It is confirmed in the Brahma-saṁhitā (5.1):
īśvaraḥ paramaḥ kṛṣṇaḥ
anādir ādir govindaḥ
yad rūpaṁ tad-abhedena
ta āveśā nigadyante
jīvā eva mahattamāḥ
A living entity who is specifically empowered by the Lord with knowledge or strength is technically called āveśa-rūpa. As stated in the Caitanya-caritāmṛta (Antya 7.11), kṛṣṇa-śakti vinā nahe tāra pravartana: unless a devotee is specifically empowered by the Lord, he cannot preach the holy name of the Lord all over the world. This is an explanation of the word āveśa-rūpa.
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