How do you understand “doctrine”? Communists have it — but they’re post-Christian and have heard of the ideas of orthodoxy and heresy and applied them to their “philosophy”, so you have Bolsheviks and Mensheviks and Trotskyites and Maoists and Stalinists, all (I think) claiming the mantle of Marx. There simply was nothing like that in paganism.
Now you ask how I define “doctrine”??? The same way my friend Mr. Webster does, which I've given you above, which you agreed with. Therefore your statement makes no sense whatsoever, none. (and you make such silly comments as this when I asked you to explain something, “I was going to, but it would be like trying to explain a sphere to a Flatland-er”.
“There simply was nothing like that in paganism.”
You've never heard of the Hindus, with their elaborate system of gods and triads and myths? You've never heard of the Babylonians with their priests and temples and sacrifices? Shall I go on? They certainly had their ideas on what was “right belief/doctrine”, “orthodoxy” and what was not. Just read what happened to Daniel and his friends.
And you compare ME to a “flatland-er”. Amazing!