144
Śrīmad-Bhāgavatam
[Canto 1, Ch. 3]
are mentioned in the revealed scriptures.
Apart from the direct incarnations, there are innumerable empowered incarnations. They are also mentioned in the revealed scriptures. Such incarnations are directly as well as indirectly empowered. When they are directly empowered they are called  vibhūtis . Directly empowered incarnations are the Kumāras, Nārada, Pṛthu, Śeṣa, Ananta, etc. As far as  vibhūtis  are concerned, they are very explicitly described in the  Bhagavad-gītā  in the  Vibhūti-yoga  chapter. And for all these different types of incarnations, the fountainhead is the  Garbhodakaśāyī  Viṣṇu.
TEXT 6
स एव प्रथमं देवः कौमारं सर्गमाश्रितः । चचार दुश्चरं ब्रह्मा ब्रह्मचर्यमखण्डितम् ॥ ६ ॥
sa eva prathamaṁ devaḥ kaumāraṁ sargam āśritaḥ cacāra duścaraṁ brahmā brahmacaryam akhaṇḍitam
saḥ—that; eva—certainly; prathamam—first; devaḥ—Supreme Lord; kaumāram—named the Kumāras (unmarried); sargam—creation; āśritaḥ—under; cacāra—performed; duścaram—very difficult to do; brahmā—in the order of Brahman; brahmacaryam—under discipline to realize the Absolute (Brahman); akhaṇḍitam—unbroken.
TRANSLATION
First of all, in the beginning of creation, there were the four unmarried sons of Brahmā [the Kumāras], who, being situated in a vow of celibacy, underwent severe austerities for realization of the Absolute Truth.
PURPORT
The creation of the material world is effected, maintained and then again annihilated at certain intervals. So there are different names of the creations in terms of the particular types of Brahmā, the father of the living beings in the creation. These Kumāras, as above-mentioned, appeared in the  kaumāra  creation of the material world, and to teach us the process