There really are only two religions. Really.

One:  A religion based on faith.

Two:  Every other religion is based on law.

First let's look at law.  Why do I say this?  Think about it.  What do you have to do to get to heaven, or reach the highest plane of consciousness, or reach Nirvana, or have twenty-some virgins, or keep your family together in heaven?  Do the right things, to earn your place in heaven.  Or become something, or be something.

It's rules and more rules, meditation, good works, bearing children, killing infidels, serving others, feeding the poor.  It's do, do, do.  If you have to do something it qualifies as a work which qualifies as law.

Next, let's look at faith.  The Bible (through Christ) is the only place where faith is a requirement.

Paul had a lot to say about it.  In the book of Romans alone, we find:
 
For in the gospel a righteousness from God is revealed, a righteousness that is by faith from first to last, just as it is written: "The righteous will live by faith."  Romans 1:17

God presented him as a sacrifice of atonement, through faith in his blood. He did this to demonstrate his justice, because in his forbearance he had left the sins committed beforehand unpunished—Romans 3:25

For we maintain that a man is justified by faith apart from observing the law.  Rom 3:28

However, to the man who does not work but trusts God who justifies the wicked, his faith is credited as righteousness.   Rom 4:5

And he received the sign of circumcision, a seal of the righteousness that he had by faith while he was still uncircumcised. So then, he is the father of all who believe but have not been circumcised, in order that righteousness might be credited to them.  Rom 4:11

It was not through law that Abraham and his offspring received the promise that he would be heir of the world, but through the righteousness that comes by faith.  For if those who live by law are heirs, faith has no value and the promise is worthless, because law brings wrath. And where there is no law there is no transgression.  Romans 4:13-15

It seems counter intuitive that we don't have to work to receive heaven, our experience of  life on earth is generally full of the harder you work, the greater your reward.

Praise God!  If it were up to my good works, I'd be on my way to Hell.  (All of the verses quoted are from the NIV.)