You have to remember what falls under the misused term "Christian".
Like any other word origin or definition, it would be implied that a Chirstian is one who follows Christ.
Mormons are "Christian". They have distorted truth by creating their own books and follow a theology completely different and "superceding" Christ.
Jehova witnesses are "Christian" but also do not follow Christ, but the Watchtower Society which has taken the role of Christ.
The catholic church has done a similar power structure move with the pope as the JWs with the Watchtower society.
Old Testament WAS of God, yet unless one follows and believes in New Testament, they cannot be Christian as the New Testament is ALL ABOUT Christ and the new covenant.
Lastly, most who are claiming to be Christian miss an important detail in regard to Old Testament:
Old Testament was a covenant with the Jews.
New Testament is where Christ has come to fulfil the Old Testament and replace it with a new one where GENTILES and Jews now have a salvation plan as he has paid a debt for all mankind. No more is Old Testament law to be law. While it is commanded the COMMANDMENTS be followed, it is no longer necessary for salvation, and all of the cleansig ritualistic practices have been abolished.
SO, i am in agreement with Bully....(ouch) and Kathianne. It is clear most who claim "Christianity" have no clue what they are talking about.
It just makes a feel good label where man can attempt to reach God on man's terms instead of letting God reach man on God's terms.