That’s a definition understood by nicean christians as the nicean creed was basically developed in a trial to say who is and isn’t christian and exile the not christians who wouldn’t cooperate
Academically I don’t think there is universal agreement on if that standard should be taken at face value.
My understanding is that it isn’t considered Christian if it doesn’t accept the Trinity. JW and LDS are considered Abrahamic but not Christian per se.
That’s a definition understood by nicean christians as the nicean creed was basically developed in a trial to say who is and isn’t christian and exile the not christians who wouldn’t cooperate
Academically I don’t think there is universal agreement on if that standard should be taken at face value.