"Is this the next last day?" seems like somebody feels that they've been living on borrowed time, similar to asewd's idea really. Kind of like they've been told that their time would come, but THAT time has come and gone, and now they're living their life wondering when everything will come to an end. The use of the word 'prepare' in the next line, for me, backs up this idea, like the person knows that they should be expecting something to happen, and so all they can do it get ready and wait.
"Is this the next last day?" seems like somebody feels that they've been living on borrowed time, similar to asewd's idea really. Kind of like they've been told that their time would come, but THAT time has come and gone, and now they're living their life wondering when everything will come to an end. The use of the word 'prepare' in the next line, for me, backs up this idea, like the person knows that they should be expecting something to happen, and so all they can do it get ready and wait.