Answer:
The kind of figurative language that Wiesel used in the speech of his time in the camps hoping for rescue is hyperbole.
Explanation:
Hyperbole is a literary device that exaggerates the message through the use of specific words or phrases to emphasize the basic statement to generate a greater reaction and an overwhelming and shocking feeling, that the audience or the reader could never forget, by using the expression moved heaven and earth to intervene he implies that foreign governments would do whatever it takes even beyond the human capacity to help them.