YOU SAID:
when there is nothing left to burn, you have to set yourself on fire
INTO JAPANESE
燃やすものが残っていないときは、火をつけなければなりません
BACK INTO ENGLISH
If there is nothing left to burn, you have to light it
INTO JAPANESE
燃やすものが残っていない場合は、点火する必要があります
BACK INTO ENGLISH
If there is nothing left to burn, you need to ignite
INTO JAPANESE
燃やすものが残っていない場合は、点火する必要があります
BACK INTO ENGLISH
If there is nothing left to burn, you need to ignite
That didn't even make that much sense in English.