Here "voice" represents a command. To not obey is like the people did not hear Yahweh's command. AT: "if you do not obey my commands, even though I am Yahweh, your God" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Both of these phrases describe being at war by the ability to see or hear it. AT: "where we will not experience the hardships of war" (See: [[rc://en/ta/man/translate/figs-parallelism]])