[–] Reddiggoat ago (edited ago)
Agnosticism is a branch of Atheism. Not all christians believe in original sin, but that doesn't make them non-christians.
If you really want to get specific, christians are also atheist in that they don't believe in any other gods.
[–] draaaak ago
100% wrong. Agnosticism is a branch to no religion. It is the only non-religious perspective.
[–] Reddiggoat ago (edited ago)
a·the·ism - noun noun: atheism
It's not a religion, it's a description. It describes agnostics and mono-theist gnostics.