Because they all seem to think their beliefs are the true beliefs of what the Bible teaches. They will always be at war with one another.
The “teachings” of the Bible are all based on how one person interprets it compared to another, the individual churches all believe the same version as they were taught by their religious leaders, who in turn believe their ultimate religious leader, for example the Catholic Church (all variations) follow the pope and his interpretation.
Because they all seem to think their beliefs are the true beliefs of what the Bible teaches. They will always be at war with one another.
The “teachings” of the Bible are all based on how one person interprets it compared to another, the individual churches all believe the same version as they were taught by their religious leaders, who in turn believe their ultimate religious leader, for example the Catholic Church (all variations) follow the pope and his interpretation.