No religion can possibly believe in “good” because it’s a very vague concept that means different things to different people/cultures.
For the most part, if you were to get the venn diagram of religions and what they feel is “good”, I’m willing to bet “not being a total bastard to your neighbour/wife/kids/friends/family/random person” is probably a pretty close approximation. Stuff about not eating squid on the third thursday of a month beginning with M is just a piss take to give people the flexibility to avoid the main rule 😉
So in summary – “Be Excellent to Each Other” is probably as good a commandment as any. And you all thought Keanu Reeves was too wooden to be the messiah