PEOPLE WHO HAVE NO SHARE IN THE WORLD TO COME
[3:6] Jews who do the following sins, do not participate in the World to Come. Instead, their souls are cut off (from their attachment to God) and lost, and they are judged (to remain in Gehinom, Hell) for a very long time.
The minim (described in [3:7], the epikursim (described in [3:7], people who deny the Torah, people who deny that God will return the dead to life (insert his soul into a newly recreated human body), people who do not believe in the coming of a Jewish Messiah (dedicated to enforcing the laws of the Bible and Talmud), people who rebel against God and cause the masses to sin, people who disassociate themselves from the Jewish community, people who sin in public, as Yehoyakim did10, informers or people who unjustly give information about a Jew to the non-Jewish authorities for them to cause him harm, people who intimidate the community for their own purposes, murderers, slanderers, one who stretches his foreskin (in order to appear uncircumcised).
[3:7] Five categories of heretics are called minim. They are: one who says there is no God nor is there a spiritual ruler of the creation: one who accepts that the creation has spiritual rulers but insists that there are two or more spiritual rulers: one who believes that there is only one God who rules nature, but he is a physical existence11 not a spiritual existence; and likewise, one who denies that God was forever and will be forever and Creator of all that exists; one who worships a star, constellation, or something else, as a mediator between himself and God. Each of these five heretics is called a min.
[3:8] Three categories of heretics are called epicursim12. They are: one who denies that prophecy exists and believes that there is no communication from G-d to man: one who denies that Moses our teacher was a prophet: one who believes that God is not aware of man's deeds. These three categories of heretics are called epicurusim.
Three categories of heretics are called kofrim. They are: one who says the Torah, or even one verse or word of the Torah, is not Divine, or one who says that the Bible and the Oral Law were not given by God to Moses, but that Moses was the author of the Bible and the Oral Law; one who denies that the Talmud and oral law are the divine interpretation of the Bible, or one who questions the authority of the teachers of our Torah, such as Tzadok and Beitos did; one who says that, although the Torah came from God, He replaced one law with another, and abolished the Torah as it was given originally, as other religions contend (even if they call themselves branches of Judaism.) Each of these three heretical beliefs is considered "one who denies the Torah."
10 He said, "My forefathers did not know how to incite God's anger. I will show you how to infuriate Him." (Sanhedrin 103b).
11 The commentary Ravad criticizes the wording of Maimonides, that he should not have made a general statement condemning all those who have erred in this concept to the status of a min. However, Maimonides is of the opinion that he is erroneously a min, and cannot be regarded as a believer.
12 These are Jews who believe in one spiritual Creator but do not believe in basic beliefs of the Jewish religion.