Question for believers

Do Christians, Muslims and those in Judaism believe in the same god?

Is it the wish of the same god that there exists different competing sects, each with absolute truth on its side?

If the gods are different, are they all omnibenevolent?

Many an African theologians have argued that the gods of African religion were also omnibenevolent, is it the case then that we have many omni gods?

And my favorite subject, is there a resolution of the problem of evil or does the Epicurean problem remain as unsolved problem for theism?