The day of their wrath refers to the time when they would punish wicked people. Alternate translation: "this is the terrible time when they will punish people" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Surviving, or staying alive, is spoken of as if it were standing. This question is used to express great sadness and fear that no one will be able to survive when God punishes him. Alternate translation: "No one can survive." (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-rquestion]])