But from now on, any act against me means death.

We've come to a point where anything can mean death.

No, she was certain they did not mean his death.

Because to show what he was feeling would mean her certain death.

He knows very well that you mean life or death for him.

And yet it could mean life or death for another human being.

If they are, in many cases it means certain death for them.

Any bit of it could mean his death if he were taken.

Should I even want him to return, when it may mean his death?

He told me also that fire could mean my death.