Bullitpoint theories for the undecided or illiterate.
Mib and jacob are the same person. Titus welliver says Jacob stole my body, his name hasn’t been revealed for a reason! The little boy in the jungle is young Jacob whose parent (crazy mother) sold her soul to have him live. But there are rules… You follow
next up… The island is the gates of he’ll and stairway to heaven. Jacob has to invite you in, you have to be invited into the kingdom of heaven. The hell part is simply the mass underworld we haven’t seen.
And… The alt timeline(sorry) is the end of the show after the island is sunk. No evil can escape so live is all good, fir most.
Mib and Jacob reveal their surnames to be ying and yang and make a fortune selling pendants???