It's very scary to think about how we constantly have to update beliefs when faced with new evidence and worry about how our beliefs are formed.
But "morality comes from God" implies some very dark things depending on which God.
For example, the Mormon God cursed the Native Americans into being non-white according to the Book of Mormon and would only make them white again when they became Mormon (according to Brigham Young).
... So the Mormon God is just a huge racist.
Let's say that somehow the Mormon God is the real God... Really, racism is moral?
I don't think any religion is true at all (and the Mormon God is just racist because of the racism of the early 1800s US), but the entire concept is really awful and just feels like desperately trying to avoid the fear of being.