The Brotherhood of Satan vs. The Brotherhood of Jesus Christ

Under the New Covenant that Jesus Christ instituted, there exists a "brotherhood" of believers who are followers of Jesus Christ, and are also the true descendants of Abraham. The New Covenant is different from the Old Covenant, which is the Law that was dictated to Moses by angels. The book of "Hebrews" in the New Testament portion of the Bible elaborates on the differences between the two Covenants, and shows how the New Covenant is superior to the Old Covenant. Hebrews also defines the "brotherhood of Jesus Christ" within the "family of God." Being part of this family has nothing to do with the groups you belong to, whether those groups are religious (including and especially Christianity), ethnic, or any other way of classifying human beings. You're either part of the family of God and a member in the brotherhood of Jesus Christ, or you are not.