Heaven's existence has long since been speculated. As it is not a properly established location to which mankind can build a bridge, road, or map.
Current working theories are that the earth's spiricual atmosphere, that traps human spirits on the planet, is as close to a heaven as we can get. It is, after all, the spirits of all humanity, known as the "Collective Unconscious", that forms the basis of mankind's ability to form anomalies.
We tear each-other apart, limb by limb, in search of any one nation's ownership over the currently believed basis for heaven.
Currently, the Vatican is winning the War Over Heaven, sponsored by Amazon.
I, however, have seen beyond the petty physical conception of Heaven.
You do not want to go to heaven.
The closer you come to God's light, or whatever the hell is creating the divine light anomaly that saints manipulate freely, the greater your shadow becomes.
A stain upon the fabric of the natural order.
A roaring, boiling blackness that forms as a response to your own sins being torn from your heart.
There's a reason the gods were outlawed, and constant misinformation campaigns were put in place to make a conception of what a god is like impossible to unify.
Going to what we call Heaven is one and the same as being sent to what we call hell.
Saints are one of the few little pieces of heaven roaming the earth.
As such, their shadows manifest before death, and haunt them relentlessly as they grow closer to becoming full saints.
Much like in normal life, where normal humans live, only the strong survive.
Being incapable of resisting your shadow's relentless torment erases your soul from the conceptual plane, making it impossible for your spirit to be reincarnated and sending you into the eternal abyss of endless unexistence.
A saint failing to resist his shadow's endless torment erases him from history permanently, making not only the people but the universe itself forget he ever existed.
If the Vatican has its way, Heaven will be open to all, and people will be able to permanently die forever.
The Abrahamic god cannot be reinstated.
The Abrahamic god cannot be reinstated.