In plain words
Neither the hosts of gods nor the great seers know My origin, for I am in every way the source of the gods and the great seers.
Word for word
Neither the hosts of gods know My origin, nor the great seers; for I am the source of the gods and of the great seers in every way.
न मे विदुः सुरगणाः प्रभवं न महर्षयःअहमादिर्हि देवानां महर्षीणां च सर्वशः
Other commentaries
The commentators
▸Bhagavadgītābhāṣyam
किमर्थम् अहं वक्ष्यामि इत्यत आह –
न मे विदुः न जानन्ति सुरगणाः ब्रह्मादयः । किं ते न विदुः ? मम प्रभवं प्रभावं प्रभुशक्त्यतिशयम् , अथवा प्रभवं प्रभवनम् उत्पत्तिम् । नापि महर्षयः भृग्वादयः विदुः । कस्मात् ते न विदुरित्युच्यते — अहम् आदिः कारणं हि यस्मात् देवानां महर्षीणां च सर्वशः सर्वप्रकारैः ॥ २ ॥
In plain words
"And why should I speak at all?" — to that, he says:
Not even the hosts of gods, Brahmā first among them, know Me — not truly. And what exactly don't they know? My prabhava — the sheer, surpassing majesty of My lordly power, or, taken another way, the very coming-into-being from which everything else arises. Not even the great sages, Bhṛgu and the rest, know it. And why not? Because I am the origin, the cause, of the gods and of the great sages both, entirely, in every possible way — and a cause is never grasped simply by looking at what it caused.
Close to the Sanskrit
"For what purpose shall I speak?" — thus; hence he says:
The hosts of gods, beginning with Brahmā, do not know, [that is,] do not perceive, My [origin]. What do they not know? My prabhava, [that is,] majesty, [that is,] the surpassing greatness of [My] lordly power; or alternatively, prabhava [means] the coming into being, [that is,] the origination. Not even the great sages, beginning with Bhṛgu, know [it]. For what reason is it said that they do not know? — I am the origin, [that is,] the cause indeed, since [I am the cause] of the gods and of the great sages, in every respect, [that is,] in all ways.