Waiting for You

I see this having 2 possible intended meanings--

1. waiting for Christ to come back because I know B.Harper is a big religous guy;
2. waiting for someone sick to get better, based on: 'I've been hoping for you What else can i do But keep hoping for you

You can kill a lot of time If you really put your mind to it or leave it all behind and never go through it '

or the more obvious and relatable to everyone...

3. he's having a hard time getting over a past love.

I think (2) makes the most sense.