In summary, classical idolatry has been clearly defined by Jewish Law. Christianity, however, has been defined as something less. The problem is defining how much less, and for what purposes.
A [[The Noahide Oath#Jerusalem Court for Bnei Noah|recent ruling]] by the [[Jerusalem Court for Bnei Noah]] has ruled that it will not allow people from a Christian background to take the [[The Noahide Pledge]] if they still believe that Jesus was Messiah. However they state that this is based on procedural and not halachic considerations. They state that another court may accept the Noahide pledge from such a person and it may be completely valid.
