Breadcrumbs – what should they display?

I'm sorry for the mysterious question, I'll do my best to explain here. I do get the idea of breadcrumbs in general. But what should I do, if there a few ways for the user to get to one location? For example: the user can get to the FAQ page through Homepage --> Support --> FAQ, but they can also go there through the footer, so it is then Homepage --> FAQ.

The question is: whast should I do? Is there a universal rule for something like this? Should I display the breadcrumbs depending on the way the user has travelled each time (it doesn't feel right to do it differently every time) or should I keep one "style", but then they come across Homepage>Support>FAQ, when they've entered through the footer, which can be confusing as well.