solemn promise

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

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

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

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

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

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

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

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.

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

"How about a solemn promise not to run away, if he puts you down?

Even after the war had begun, there was a solemn promise that neither side would use Magic.

She made solemn promise to herself that everything would be very, very different from now on.

Take this; and with it, you have my solemn promise."

This signifies a solemn promise by both the parents to give their children in marriage to the other.

You may give your ruler our solemn promise that we will meet."

Do note, though, that we all have seen one "successful" politician make a solemn promise and break it.

It can be called an oath, although this word also has a normal meaning of a "solemn promise".

After I gave you my solemn promise not to try anything again, you didn't trust me?

Aufors made a solemn promise, expressed his thanks, and went out into the air.

Those who prefer may take an equivalent solemn promise instead of an oath.

Obviously, before they left, they made me give my solemn promise to be careful.

She begged me to take hold of myself, and I'd give my solemn promise I would.

She made Ramsey give his solemn promise not to leave her alone from now onwards.

Kelon's solemn promise to Heather took on a whole new meaning.