dowieść prawdy

He would never be able now to prove the truth of his father's dream.

So I disguised myself and came here in order to prove the truth to you.

"And here sits one who can prove the truth of what I say!"

And there was no way he could prove the truth.

Would you have me prove the truth of my words?

But if Smith is dead, we can just forget it; we'll never be able to prove the truth.

Once more she had proved the truth of the Bible.

And there he was to prove the truth of his words.

That should prove the truth of what I tell you.

But I am going to prove the truth of these words.