Mahabharata 12.201.3

एकः स्वयंभूर्भगवानाद्यो ब्रह्मा सनातनःब्रह्मणः सप्त पुत्रा वै महात्मानः स्वयंभुवः

ekaḥ svayaṃbhūrbhagavānādyo brahmā sanātanaḥbrahmaṇaḥ sapta putrā vai mahātmānaḥ svayaṃbhuvaḥ

Our plain-language meaning of this verse is waiting for scholar review.