Scientists have discovered a gene which can be traced from the Biblical figure of Aaron, the first High Priest (kohen) of the Jewish people, to a segment of the Jewish population today which carries the priestly lineage. The nation of Israel’s priestly class, which is passed down from father to son, began with Aaron (Exodus 28:1). Despite 2,000 years of diaspora, modern science has now proved that the Biblical concept of kohanim has genetic evidence which has allowed the priestly heritage to maintain its integrity, leading to speculation that when the Third Temple is built, modern-day kohanim will be fully qualified to preside over the rituals and rites of the Holy Altar.
Originally, the firstborn of Israel were intended to serve God after He saved them from the plague that killed all of the firstborn sons in Egypt (Exodus 11). When the firstborns participated in the sin of the Golden Calf in the desert (Exodus 32), they disqualified themselves from serving in the Jewish Temple. The tribe of Levi (the tribe of Moses and Aaron) refrained from the sin, so they took the place of the firstborns, serving in the Tabernacle and later in the Temple as musicians, guards, and in several other roles. FULL REPORT