In plain words
However many hardships came, by their Prema for God they could endure those hardships and bear them. What end did the Kauravas come to, because they had no faith in God? Dhṛtarāṣṭra, who had a hundred sons, was left in the end without a single son. In the Kurukṣetra war, when Arjuna grew weak, said, ‘I will fight no more,’ and laid the Gāṇḍīva down, Śrī Kṛṣṇa spoke thus:
Rise, Dhanañjaya! Fate is strong; justice will win; Satya will stand; self-interest will perish; this, always, is the way of the age; see now: at the very end, even for the father of a hundred sons there is no one to offer the piṇḍa, alas, when the stars go astray.
The Kauravas fell into such a plight. As much wealth as they needed. As much strength as they needed. Great teachers themselves stood as their commanders. Droṇācārya was right on their side. Aśvatthāmā was right on their side. Bhīṣma was right on their side. With all of them there, what was the use? God was not on their side. God was on the side of the Pāṇḍavas. That is why victory came to the Pāṇḍavas alone. When we take up the Bhagavad Gītā: at the very start He began with Dharma and closed with victory; that is the Bhagavad Gītā:
Dharmakṣetre kurukṣetre samavetā yuyutsavaḥ māmakāḥ pāṇḍavāś caiva kim akurvata sañjayā
And at the end:
Yatra yogeśvaraḥ kṛṣṇa yatra pārtho dhanurdharaḥ tatra śrīr vijayo bhūti dhruvā nītir matir mama
At the very last He closed it with ‘we shall achieve victory’.