The Gospel of John is a theological, not historical text or Gospel. When compared to the texts of Matthew, Mark, and Luke the Gospel of John portrays an entirely different order of key events from the other texts.

One example is the story of the cleansing of the temple in John 2:13-24. In the Gospel of John, it portrays this story as occurring at the beginning of Jesus' alleged ministry. This contradicts the setup of the story in the other texts that put it towards the end of Jesus' alleged ministry. Christians who don't see that this is talking about the same story do not have the reading comprehension to see this for what it is. When Christians approach this story with pre-conceived ideas that there aren't any contradictions in the Gospels and they all harmonize together, they commonly arrive at the conclusion there were two temple cleansings that took place. Pre-conceived bias distorts Christian's reading comprehension in such a case.