There are certain things that I just know. I do not know them on the basis of evidence; rather, my just knowing transcends the whole concept of evidence. I just know that it does.
For example, I just know what certain cities, states, and countries are like, without having been there or even read up on them. I just know what consequences an action will have; if that action has always had different consequences before, I just know that things will work out differently this time. I just know that someone whom I have just glimpsed across the room is the one for me.
Moreover, in religion, I just know what God wants me to do and, more to the point, what God wants you to do. You needn't bother pointing out contrary passages in the holy book of the religion in which I claim membership. I just know which passages are a crystal-clear expression of God's eternal will, which have been superseded, and which need to be interpreted correctly. For the last category, I just know what the correct interpretation is.
Furthermore, I just know all relevant facts about you, even when my only contact with you is over the Internet. I just know your socioeconomic background, your appearance, and all relevant details of whatever parts of your history you choose to bring up. I also just know your inner identity and mental state and how those things came to be. Please don't waste your time telling me that I'm mistaken, since I just know that you're lying.
There is no point in providing evidence or logic to gainsay what I just know. When those things contradict what I just know, I just know that the evidence must have been misconstrued and that the logic must be flawed.
Finally, it will do no good to point out that other people, or even you, just know something mutually exclusive with what I just know. I just know that everyone else is just making stuff up. How do I know that what I just know isn't something that I just made up? I just know.