A Christian is a person who broke the Old Testament chains of Judaism’s laws in favor of accepting Jesus Christ as their savior.
God’s offer of salvation is collective and available to everyone but acceptance of the offer must be an individual decision.
But a Christian still keeps the Ten Commandments in my opinion.
The truth is that Jesus Christ is the furfillment of all the OT or Hebrew scriptures prophecy so there is NO breaking of what was first promised to the Jewish people.
Besides what Jesus did on the Cross for the forgiveness of sins to all who come to Him.