The Bible is fiction in the sense that it's not true but fiction isn't lying by default.
If J.K. Rowling wrote Harry Potter then said it was a true story, that would be lying.
You can make the argument that the Bible isn't lying if one believes that it's author or authors didn't write it with the intent to deceive. Like, maybe the stories within the Bible were only used by the Church to trick it's followers after the fact.
If that were the case, the Bible can be used to perpetrate falsehoods but the stories in them are not lies, only fiction . Additionally, you have to keep in mind that people who genuinely believe what they preach are not actually lying because they are not actively trying to deceive. Rather, they would simply be giving false information.
In other words, it comes down to motive.