[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/10/20/art.ap.biden.9.18.jpg caption="Biden predicts Obama will have to make some unpopular decisions in his first six months in office."]
SEATTLE (CNN) - Joe Biden told Democratic fundraisers Sunday night that there is no doubt in his mind a crisis will occur during Barack Obama's first six months in office that will test his mettle and force him to make unpopular decisions.
"Mark my words. It will not be six months before the world tests Barack Obama like they did John Kennedy," said Biden to a roomful of donors. "The world is looking. We're about to elect a brilliant 47-year-old senator president of the United States of America."
"Remember I said it standing here, if you don't remember anything else I said," Biden continued. "Watch, we're going to have an international crisis, a generated crisis, to test the mettle of this guy.
"I promise you it will occur. As a student of history and having served with seven presidents, I guarantee you it's going happen. I can give you at least four or five scenarios from where it might originate."
The Delaware senator spoke at two Seattle fundraises Sunday night, expected to bring in $1 million for the campaign. Biden told the supporters that when Obama will need them to stand with the administration on the difficult calls - not financially, but by using their influence within their communities to convince others that the right decisions are being made.
"I promise you, you all are going to be sitting here a year from now going, 'Oh my God, why are they there in the polls, why is the polling so down, why is this thing so tough?' We're going have to make some incredibly tough decisions in the first two years," said Biden. "I'm asking you now, be prepared to stick with us. Remember the faith you had at this point because you're going to have to reinforce us."
Telling the crowd to "gird their loins" for a bumpy beginning to the next presidential term, Biden said it wouldn't be initially apparent that the correct decisions are being made because "they're not likely to be as popular as they are sound. Because if they're popular, they're probably not sound."
Fundraisers are generally closed to the media's cameras, though print journalists are usually allowed in. Biden appeared to forget Sunday night's fundraiser wasn't closed to reporters, saying, "I probably shouldn't have said all this because it dawned on me that the press is here." Moments later, he ended his remarks.