BG Chap 10 - Kṛṣṇa is the origin of everyone
The seven great sages (Bhṛgu, Marīci, Atri, Pulastya, Pulāha, Kratu and Vasiṣṭha), the first four sages headed by Sanaka, as well as the fourteen Manus starting with Svāyambhuva, were born from the mind and other organs of Kṛṣṇa’s form of Hiraṇyagarbha (Brahmā). Bhṛgu was born from the touch of Brahmā, Marīci from his mind, Atri from his eyes, Pulastya from his ears, Pulaha from his navel, Kratu from his hand and Vasiṣṭha from his breathing. There are innumerable universes and innumerable planets within each universe, and each planet is full of population of different varieties. All of them are born of these twenty-five patriarchs. Brahmā underwent penance for one thousand years of the demigods before he realized by the grace of Kṛṣṇa how to create. Then from Brahmā came Sanaka, Sananda, Sanātana and Sanat-kumāra, then Rudra, and then the seven sages, and in this way all the brāhmaṇas and kṣatriyas are born out of the energy of the Supreme Personality of Godhead. The brāhmaṇas, kṣatriyas and others are the offspring of these 25 persons (11 sages and 14 Manus) either thru birth or line of knowledge.
Despite the helpfulness of these qualities, they cannot on their own reveal Kṛṣṇa. Nor can the sages and demigods, who are born of Kṛṣṇa and are situated in goodness know Him thru their own abilities. The knowers of scripture cannot understand Kṛṣṇa by their own intelligence because intelligence and other qualities are born of goodness and the other modes of māyā. So even though they originate from Kṛṣṇa, the great sages and demigods still cannot understand Kṛṣṇa, who is beyond the modes.