The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully.
How is it that hardly any major religion has looked at science and concluded, This is better than we thought! The Universe is much bigger than our prophets said, grander, more subtle, more elegant? Instead they say, No, no, no! My god is a little god, and I want him to stay that way. A religion, old or new, that stressed the magnificence of the Universe as revealed by modern science might be able to draw forth reserves of reverence and awe hardly tapped by the conventional faiths.
I came to the conclusion long ago that all religions were true and that also that all had some error in them, and while I hold by my own religion, I should hold other religions as dear as Hinduism. So we can only pray, if we were Hindus, not that a Christian should become a Hindu; but our innermost prayer should be that a Hindu should become a better Hindu, a Muslim a better Muslim, and a Christian a better Christian.