Thoughts about human thoughts towards God

Been wondering, do people say they trust God, believe Jesus is the savior and await for the second coming. They say this issit because they get some benefits from praying and that they believe God exits because God answered their prayer. Or are they afraid, because there is saying that if you don't believe in me and follow the ten C, they will be punish and shall not recognize as gods children. 

So there is a differences in this, u believe because you are afraid? Or do you believe because of what had God done and for that, u wish to follow him and be obident.

In other words, once shouldn't accept the bread and wine if they are unclean, meaning to say that, you can go church, but you shall not receive the bread that was given by he pastor. And there is ritual for that for you to be clean once more. Even woman with period shall

Be unclean at that period of time. Why aren't we following this?