One possibility is that the person has not been taught properly about the Christian faith. There are plenty of people either Christian, or not, who teach and say things about Christianity that are not true.
Another possibility is that a person may have a personal dislike or prejudice against Christianity. They will thus be ready and willing to hear or listen to things which put the Christian faith in a bad light, or to hear misinformation about Christianity.
Even further to all this, various cults and sects, which claim to be Christian, create confusion in the minds of many.
Various Christian denominations may have teachings which in some areas conflict and so cause confusion, and in some cases provide mistaken notions which are not soundly based.
Examples of ideas which are mistaken are numerous. They include ideas that the New Testament was written well into the second century and thus not by those it is claimed to be written by, when the facts have been shown to prove otherwise. Other mistaken ideas may include the role of Constantine, who in the third century, could not have compiled the Bible since it existed well before his time.
Christians frequently hear all kinds of mistaken ideas and find them to be false. Ideas about numerous contradictions in the four gospel accounts are also frequently mentioned but mistaken.
addendum:
More to the point many if not most Christians and others have mistaken ideas about Christianity because documents, doctrine, history and practice seldom correspond.
as an example few Christians are aware that the bible was compiled under the direction of Constantine. Truck loads of scripture from the early Christian period was tossed and the "Old Testament" represents radical editing and reordering of Hebrew scripture in a way to support the idea of Jesus as Christ.
further addendum:
refer to the Council of Nicea with regards to the compilation of the authorized text of the bible. Lost/excluded books of the bible often have places in the libraries of Christian Scholars. There were many pieces of scripture of varying degrees of authenticity in circulation prior to the Nicean Council but no "bible." It was the role of the Council as convened by Constantine to create the definitive version of Scripture. The Nicean Creed and groundwork for the subsequent councils convened prior to the schism of the eastern and western churches also came out of that meeting.
Roman Catholic, Lutheran and Baptist instructors of my courses in Christianity had no issue with this even as historical fact. They did differ on the degree of divine inspiration that might have come into play.
Another Answer:
The reason why some have mistaken ideas about 'Christianity' is: Because many of those who profess to be Christians; have actually betrayed and misrepresented their Lord by their conduct.
Example: Jesus said to 'speak truth'. Yet parents are permitted by their religion (which labels itself as being 'Christian'); to teach their children the 'lie' that there's a Santa Claus who brings gifts. This causes many to wonder what other lies those religions are telling.
Another example: The Bible portrays God as love, and compassionate. Yet the religions (which label themselves 'Christian'); portray God as one who 'eternally torments' those who may simply not believe in his Son. This is contradictory and thus confusing to those who look at 'Christendom'.
This has been noticed by scholars, theologians, and historians, as they look over past history of 'professed Christianity':
Many people have come to the conclusion that 'Christendom' is full of hypocrisy. Such hypocrisy has stained 'true Christianity'. That's why some have mistaken ideas about 'Christianity'.
The ideas of Christianity were seen by many as a threat to the Roman Empire. Some believe that is why Rome eventually embraced Christianity, as to influence it.
The ideas of Christianity started in Judea with the teaching of Jesus Christ.
Community & control
jesus
None!
Olivia was never canonized as she never existed. She was the subject of a fictional story the circulated in the early years of Christianity that was mistaken for a biography by some people.
Promoted the ideas of individualism.
a wild horse gets captured and falls in love if im not mistaken
The spread of Christianity
The common belief is that Gnosticism originated as a branch of Christianity. There are some theories that claim the central ideas of Gnosticism existed before the birth of Christ. These ideas, of a dualistic religion (two Gods), still prevail today in modern Christianity with the teachings of one supremely good God of Heaven and one sinful, loathsome God of Hell.
depends on your pick of christianity. some can have several wives, while others can only have one , however when talking biblically, if I'm not mistaken, you can have up to 3 wives
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