Kohen is the Hebrew word for "priest", used in reference to the Aaronic priesthood, also called Aaronites or Aaronides. They are traditionally believed and halakhically required to be of direct patrilineal descent from the biblical Aaron, brother of Moses, and thus belong to the Tribe of Levi.
The priestly breastplate of the high priest.
Kohen, Kohen Gadol and a Levite (Charles Foster, 1873)
A group of kohanim studying the Mishnayot laws of Keilim in anticipation of the rebuilding of the Beit Hamikdash
Synagogal Judaism or Synagogal and Sacerdotal Judaism was a branch of Judaism that emerged around the 2nd century BCE with the construction of the first synagogues in the Jewish diaspora and ancient Judea. Parallel to the Rabbinic and Jewish Christian movements, it developed after the destruction of the Second Temple in Jerusalem in 70 CE.
Sardis synagogue, Turkey, 3rd century.
Moses depicted in a fresco from the Dura-Europos synagogue, Syria, mid-3rd century.
Synagogue of Capernaum, Israel, 2nd century.
Mosaic, Maon Synagogue, Israel, 5th century.