Chapter 3 - Verse 21

यद्यदाचरति श्रेष्ठस्तत्तदेवेतरो जनः ।
स यत्प्रमाणं कुरुते लोकस्तदनुवर्तते ॥ २१ ॥

yadyadācarati śreṣṭhastattadevetaro janaḥ .
sa yatpramāṇaṃ kurute lokastadanuvartate .. 21 ..


Whatsoever a great man does, that alone the other men do; whatever he sets up as the standard, that the world follows.
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Whatever authority the chief among men follows, whether in relation to the spiritual or temporal matters, the same is regarded as the authority by his followers.

If you have a doubt even as regards the necessity there is for the protection of the masses, why do you not observe Me*?

i.e., why do you not follow My example and try to prevent the masses from going astray by setting an example yourself.