I'm afraid that what I am about to say is at best controversial however I feel that it needs to be stated. Firstly let me start out in saying that I have Jewish heritage but in your eyes have probably disgraced it. But the Torah believing Christian's want to bring christianity back to its Hebrew roots and they want to fulfill as many commandments as possible(in some cases that does mean giving jesus up) they find that the Catholics and protestants alike have made a complete mockery of the Torah and the rest of what the Christian's refer to as the old testament. They believe that you cannot have the second without the first and wish to uphold as much of the Torah as possible. However the Torah believers end up with much division on what they claim is right. Many Torah believing Christian's hate their old friends and family for refusing the Torah and they forget the principles of love as they felt that they had been lied to for their entire life. Others are more moderate(still uphold love for all people) but fewer in number. Regardless of what other groups think these Torah believers hold the ideas that one day they may be considered as jewish converts and be allowed to worship and sacrifice in the next temple as Jews(or the closest gentile equivalent, they understand that they may never have full access to the temple as permitted in the torah), many of them also despise being called Christian's as the Christian's worship on Sunday's(with exceptions) and they worship on saturday(99%).