Kṛiṣṇa says (vii. 19) that the man of knowledge affirms that Vāsudeva is All. This is the central doctrine of the Bhagavadgītā. Kṛiṣṇa Vāsudeva is on… - W. Douglas P. Hill

On the empiric plane the Gītā teaches theism; it is not, then, surprising to find—still on the empiric plane—an emphasis on ethics absent from the earlier Upaniṣads. Krishna is never weary of telling Arjuna to be virtuous; his own sympathies are decidedly on the side of righteousness; it is to reestablish right when wrong prevails that he takes birth as man.

Doom am I, that causes worlds to perish, matured and here come forth to destroy the worlds; even apart from thee <small>(i.e. even without thine action. Th. (J. C. Thomson, 1855) translates: 'except thee,' and complains that the prophecy was not fulfilled.)</small> not one of the warriors drawn up in ranks opposing shall survive.

But for those in whom that ignorance of Self is by knowledge destroyed, their knowledge like the sun illumines That Supreme.