A rnold Murray teaches the heresy known as modalism, that God is one person who takes three forms: the Father who became the Son who became the Holy Spirit. Also, the Shepherd's Chapel teaches what is called the Christian Identity movement. This is the belief that the British and, therefore, the Americans and Canadians, are the true descendants of the ancient Israelites, the 10 lost tribes. This later doctrine is very often used by militia groups to support racist ideologies.
Apparently he doesn't believe in interracial marriage either. I haven't looked at his stuff, but I did run across this lady and automatically got a horrible feeling about her: Katie Souza.
Also, please read above. I think some are under the impression that the scriptures I quoted came from me but they came directly from Sheperd's Chapel website.