To a god, belief is an acceptance of their philosophy and ideas, and also a confidence the god will still be there tomorrow. This faith is self-fulfilling; so long as you believe, the god will be. If you forget, then it won’t.
To a forgotten god, belief is something much different. It is the futile, desperate hope that things will change. Bereft of evidence or proof, belief is all that is left. To a forgotten god, belief is the hope that you will bring it back to life.
Remember more below, with the Forgotten God warlock!Warlock-ForgottenGod-v2