Lord Caitanya was very fair complexion, nice-looking. So kṛṣṇa-varṇaṁ tviṣā. Tviṣā, by complexion, He is not Kṛṣṇa, but He is Kṛṣṇa. Kṛṣṇa-varṇam tviṣākṛṣṇam and sāṅgo 'pāṅgāstra-pārṣadam. And He is associated by His confidential, I mean to say, devotees. You'll find Lord Caitanya always crowded by His devotees. Always. His dancing mode—you have seen the picture. Special associates, that Advaita, Gadādhara, Nityānanda. So that incarnation, who is Kṛṣṇa, but His color, His complexion, is not black, but He is associated with devotees . . . and the process of worshiping that incarnation is to chant Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare.
So in this yuga, in this Kali-yuga, incarnation is Lord Caitanya, and the process of worship is this sound vibration. That is mentioned. In every avatāra, every incarnation . . . just like Lord Buddha. His name is also mentioned. And there will be another incarnation, Kalki. That is also mentioned. So they are mentioned, yugāvatāra. And śaktyāveśāvatāra. Śaktyāveśāvatāra. All avatāras, their mission is to preach the message of God. Avatāra has no other business. The message of God. Śaktyāveśāvatāra.
This Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare / Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare, this is also considered śaktyāveśāvatāra, the incarnation of sound. Incarnation of sound. It is described by Lord Caitanya that kali-kāle nāma rūpe avatāra (CC Adi 17.22):
"In this Kali-yuga, in this age, this incarnation of name—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare—to give facility to the conditioned soul." They cannot do anything. It is very difficult to perform any other religious rituals. This, the best anywhere, everywhere—you can chant Hare Kṛṣṇa, Hare Kṛṣṇa. Nāmnām akāri bahudhā nija-sarva-śaktih (CC Antya 20.16).
Śakti, this word is used, śakti. And from śakti, that energy, śaktyāveśāvatāra. So this name is also śaktyāveśāvatāra.