Demons not only can lie but I believe that's all they do. There is no truth in them. But then....You don't even have to talk to them. You would be a fool to try to have a conversation with them, they would turn you every way but loose. Portals are a fact of life. That's my point. Do we use them? No. Personally, I don't think our flesh and blood bodies would survive a crossing through a portal. And again....What would you do after you crossed? You don't belong there.Demons can lie and deceiving. How do you know they aren't tricking people into believing that 'interdimensional portals' are significant?