If knowledge is merely what (1) one believes that (2) happens to correspond to one's experience then knowledge means anything at all and so means nothing at all (meaninglessness is the fate of all open definitions). This in turn means we can't know that knowledge consists of points (1) and (2). If we know anything at all, we know that knowledge is more than (1) and (2).
What does this have to do with science and religion?
If we don't know what knowledge is then how do we know whether science and religion give us knowledge? If there is no such thing as knowledge then what is science anyway? What would it do?