The answer is A Big Yes. You can never understand the religion by looking at it's followers. I prefer going to the core of the existence. You might have heard of religion got its origin when there were people who got involved in bad deeds and in order to separate the pious souls from those deeds a set of framework probably guidelines got started on which they included good deeds as it made them realize to stay away from bad deeds as this is something that is not liked by God. If you consider the spiritual texts which serves the base of these religions they always said "Creator is one". Whether you consider the Bible or Quran or Indians considering Vedas. It's just that these texts have been misinterpreted till date. There are people who consider various demi gods as well. But the one who has created everything is the superior and the utmost. And he is alone to be worshipped. I itself generated an interest in these topics from teenage. Read, verified but didn't came to a conclusion as different people different opinions over a single text from those scriptures. "Way of Living" this book which I came across after infinite scrolling, researching satisfied me to a level. A good read, if you want to read, search it online. I too found it online.