Sentence examples for I know for certain from inspiring English sources

there are things I know for certain about my grandfather.

Let me start with what I know for certain.

So I can't say I know for certain.

I know for certain that at least two of them became leaders of the Democratic Party.

All I know for certain is that if we don't try them we lose.

"If there is one thing I know for certain, it is that this has to stop.

"Because at least I know for certain one of us is going to win something.

I know for certain that they are not bringing in double my revenue".

But there's one thing I know for certain: my least popular opinion involves cheese.

"I know for certain that I have been scammed," she said.

"I know for certain: I made the wrong choice," she wrote.