Roger, we are admonished to preach the gospel. It does not specify where or how we are to be missionaries. Some people are called to spread the news to the neighbors in our own back yard! There will always be things in the bible which are difficult to understand. Even the Doctors of Religion don't have all the answers. That's why it is so important to study, that we might know the answer. The more time we spend in contemplation of the life of Christ, the more like him we become and our understanding will improve.

We should never judge someone else because of their situation. We as human beings should let God do the judging. "Judge not lest ye be judged."

"Go ye therefore, and teach all nations, baptizing them in the name of the Father, Son, and of the Holy Ghost; Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen." Matthew 27:19,20 (KJV)