Targum zu Schemot 10:28

And Pharoh said to him, Go from me. Beware that thou add not to see my face to speak before me one of these words that are so hard: for in the day that thou seest my face, my anger will grow strong against thee, and I will deliver thee into the hands of the men who seek thy life to take it.

And Pharoh said to him, Go from me. Beware that thou increase not my anger against thee by saying, Are not these hard words that thou speakest to me? Verily Pharoh would rather die than hear thy words. Beware, lest my anger grow strong against thee, and I deliver thee into the hands of this people, who require thy life to slay thee.