"This is the thanks I get for coming here to warn you?"

"If you hadn't come back to warn us, we would never have known this was coming."

"And then you came to the house to warn us."

And he knew that it had come to warn him.

I came here to warn you not to leave your quarters.

"I felt the time had come to warn you to lay off."

Now a dark time threatens us again, and I have come here to warn you.

That is why I had to come to warn you.

He came to warn you that your time was nearly ended.

He had come to warn them, but they were beyond his reach.