Adjectives, not nouns

It got confusing because once Christianity became the mainstream, they wanted described as a noun because they were the majority, it was to draw a clear line between "Christian" and "everybody else".

Like that whole "blood is thicker than water" meant choosing other Christians over blood family.

The whole thing is:

The blood of the covenant is thicker than the water of the womb

But anyways, use adjectives to describe people