Lyric discussion by BFeeder 

Cover art for Half-Light lyrics by Porcupine Tree

I'd say this was Lazarus II, because just as Lazarus is a message from a Mother to her dead son, this seems to be the other way around, taken from the perspective of the son. To me it also hints at rebirth with the line "hold me inside you"

As a final note after about 19 seconds you hear a female voice whisper "David", its very quiet so you'll turn up your sound a bit.