Gordon asks: What does it mean to be a christian?? What does it mean to be a God fearing person? What does mean to be truly devoted to Him?
Those are three different questions:
A. A Christian is one who has Jesus as his or her Lord. A cultural "christian" is one who claims some connection to God in the guise of a Christian worldview, even though that person may have no real spiritual life at all.
B. A God fearing person, literally, is one who's actions are changed due to a recognition of judgment. It is a person who is afraid of what God will do to them if they don't change their actions.
C. To be truly devoted to God is defined differently, even in different places in the Bible. Right now, my best understanding is: Treat God as the Lord of all, in worship, obedience, and belief and to treat other people as God's creation in His image-- with respect and care for their needs.