A Summary of the Srimad Bhagavatham : Ch-7. Part-22.
7.Sri Krishna’s Kurukshetra Lila :
Sri Krishna blessed him with sight for a minute, and Dhritarashtra saw this miracle.
Then he prayed to the great Master, “After having seen this, I do not want to see anything else. Make me blind once again.”
Sri Krishna withdrew himself and, uttering not a word, left the audience and returned to the Pandavas.
War took place.
Without going into detail of the further events, we can sum up by saying that Sri Krishna was even ready to break his promise of not taking up weapons in the war when he found that Arjuna had a subtle inner respect for Bhishma as his grandfather and would not actually face him with the strength that he could have exercised at that moment.
Arjuna was going a little slow, as if he was not eager to fight, and Bhishma was destroying everybody.
Bhishma was raging like fire, and thousands and thousands of Pandava forces were dying.
Sri Krishna jumped from the chariot and said, “You are not able to do anything! I shall myself do everything. I shall destroy Bhishma just now.”
To be continued ....