In plain words
There is no use washing them with good words. Our words too lose their worth. What kind of teaching Kṛṣṇa gave the whole assembly so well, what kind of Dharma He taught, how He tried for peace: all this became known to everyone. So whatever God says, whatever He does, whatever He sees, He never moves in the least away from justice and Dharma. But people do not have the fitness to recognise this Satya. Their understanding goes only that far. Bring a rat's skin and scrub it as much as you like: black stays black; white does not come. It will never come. Even if you take hold of a sheep's tail and stretch it, it stays as it is; it does not stretch. Then however many ways you tell these wicked men, will it come to them? What there is, is only that much. So, saying “We have nothing at all to do with these Kauravas,” He came back.
Is it possible to make nectar out of the deadly poison? Is it any good to scatter jasmine flowers in a fearful forest fire? Is good advice any use before the wicked? O treasury of virtues! Why these words of peace any more, Gopāla!
We want no more of these words of peace. All this is an assembly full of evil minds. In so great an assembly, before the wicked and the hostile, who has the right to speak so firmly? Only God. That is why Kṛṣṇa won this victory in this way. That is why, at the very end of the Bhagavad Gītā:
Yatra yogeśvaraḥ kṛṣṇo yatra pārtho dhanurdharaḥ tatra śrīr vijayo bhūtir dhruvā nītir matir mama.
So it is said. Where Kṛṣṇa and sacred Bhakti, these two, are together, there is victory for you. There alone is happiness for you. There alone is heaven for you. There alone is Ānanda for you, He said.