John Halliday "God" by John Lennon

"Yesterday..." = Obvious reference.
"-now I'm reborn." = Always has been Halliday, he's reborn as himself again.
"I was the Walrus," = A Pagan symbol of death, 1st "Paul" is "dead"
"But now I'm John" = John Halliday

The Original Beatles: https://youtu.be/YhBDmrhS_5k
Colin Unwin:
https://www.youtube.com/channel/UCwtAQpR5FQc_u69XzX5kF_g
https://www.facebook.com/colin.beatlesunwin