Maybe you have a good point about religions being exclusive, but let's not confuse the texts with religions.
For example, there are only a few bible variations (King James version, American Standard Version, New American Standard, etc), compared to the 42,000+ different denominations of Christianity... each of those is a different religion calling themselves more correct on their interpretation than others. Some are exclusive with their own heaven and others are not... various levels of exclusivity. Even within a denomination each person has their own set of beliefs that may be inclusive or exclusive about race, sexual preference, etc. Religions tend to congeal around people who proclaim their beliefs in a way that other people want to listen and agree.
I've read different text translations of things that are not Christian. Not all religions, but enough to be satisfied. Some parts can be considered encompassing (aka, turn the other cheek) and some parts can be interpreted as exclusionary (e.g. follow him to get into heaven, with often indirect rationale that he is the only path). It is up to the religion/people how they want to interpret these.
So the texts say good things to good people and exclusive things to exclusive people.