Like immigrants in search of a better life, we must pursue the Kingdom of God relentlessly, because the Kingdom of God is the best possible world and life for which we could hope.
Just because you have problems in a church where you go doesn't mean that you should not attend with other Christians. We are expected to attend with each other.
It is widely known that Christmas has pagan origins, but many Christians seem content to partake in the festivities. But Christmas has no place in Christian worship.
