The Bible teaches that we should seek truth and avoid falsehoods. However, when it comes to things like the shape of the earth, most Christians rely on information from governments or scientists, since none of us have personally verified it by traveling to space. If a Christian sincerely believes something that is false (like the earth being flat or round), before it has been revealed to them or verified firsthand, is that considered heresy, or just ignorance? At what point does holding a false belief cross into spiritual error? I'm especially interested in how this applies when the belief doesn’t directly affect one’s salvation or core doctrines. Is believing in a scientifically incorrect idea — even unknowingly — a form of heresy in the eyes of the Church or Scripture?