What is an example of tone in Night by Elie Wiesel?

The tone of a text refers to author's attitude towards the subject he is discussing. The tone of an author is usually conveyed by his choice of words. In the case of Night, the author recounts terrible experiences that cause him great pain. The tone is a mournful, sad one. This is conveyed through his choice of words:

"Never shall I forget that night, the first night in camp, which has turned my life into one long night, seven times cursed and seven times sealed ... Never shall I forget those moments which murdered my God and my soul and turned my dreams to dust. Never shall I forget these things, even if I am condemned to live as long as God Himself. Never ... I did not deny God's existence, but I doubted his absolute justice." (Chapter 3)