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I made myself a solemn promise: if the parasites won.

"He gave me his solemn promise he'd have her home two hours ago."

And what would have made them ignore the solemn promise of their own Ambassador?

We have given our solemn promise on that point to numerous governments throughout the world.

You'll see your cousin eventually, I give you my solemn promise.

Can I ask you, ladies and gentlemen, for your solemn promise?

So Alvin made the most solemn promise of his whole life, right then and there.

I made myself a solemn promise never to mention the matter to her.

Now, though, solemn promises are again being made that the new pact will actually work.

I made a solemn promise to myself to talk to Caron before the day was over.