The mitzvah of sanctifying the Kohen with distinct roles and obligations derived from heredity is morally incompatible with the principle of egalitarianism. The mitzvah of sanctifying the Kohen The commandment to sanctify the progeny of Ahron (Hebrew "מצוות קידוש זרעו של אהרן") is a commandment based in the Hebrew Bible, and developed in rabbinical teaching that requires believers in Judaism to sanctify their priests ("kohanim") in various ways. These include assisting him to abstain from any prohibitions in the Law that apply to him, and by affording him first rights in areas relating to holiness and the service of God. In the enumeration of Maimonides this
Mitzvah goreret mitzvah is by habit, in which a person becomes accustomed to performing a mitzvah regularly. The contrast to this belief is called "aveira goreret aveira" in which the commission of an "aveira" (sin) leads to another sin. The phrase has often been used in songs for children to encourage the performance of good works. One popular song, written by Andy Vogel in 1986, was recorded on the Reform Jewish movement's "NFTY at 50" album, and is widely sung in the Reform Jewish movement. Mitzvah goreret mitzvah The Hebrew phrase mitzvah goreret mitzvah, averah goreret averah (Hebrew: מצווה גוררת מצווה; עברה גוררת