Definition of knowledge – epistemology

B.E.
Hello Rabbi,
Due to the completion of your book “Truth and Unstable”, and the beginning of your study of the theory of cognition.
I was interested in whether the conclusion of the book “True and Unstable” also contains a new definition of the concept of knowledge? The accepted understanding used to be that ‘knowledge’ consisted of three things: the person believes in the claim, it is indeed true, and he has justification for speaking. This is what distinguished between ‘knowledge’ and ‘faith’, a slang term.
But throughout the exile, Gettier, along with all sorts of later NFPKs, challenged this assumption. And since then, I have seen many disputes about the matter.
So I wanted to ask what your definition of the concept of knowledge is as distinct from belief, and can we even know anything? (Especially according to some philosophers who say that we can never achieve certainty or full understanding regarding the noumena that are external to us)
Thank you for the fascinating book, The Skylight.