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Malkitezedek was a priest contemporary with Avram. He lost or ceded his special status to Avram (Tz'enah Ur'enah and R' Daniel Raccah cited here). Avram's (i.e. Avraham's) grandson Yaakov had twelve sons, one of which was Levi. When Israel received the torah a few generations later, the tribe of Levi was set aside for service to God, and within the tribe ...


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The reference in Psalms Tehillim 110:4 נִשְׁבַּע יְהֹוָה | וְלֹא יִנָּחֵם אַתָּה כֹהֵן לְעוֹלָם עַל דִּבְרָתִי מַלְכִּי צֶדֶק: The Lord swore and will not repent; you are a priest forever because of the speech of Malchizedek. Rashi explains in 110:1 that this refers to Avraham. The word of the Lord to my master: Our Rabbis interpreted it as ...


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The other answer here has the basics on the Melchizedek in Genesis and the Kohanim as the only legitimate Jewish priests. Chapter 7 of Hebrews is an attempt by "Paul"(authorship of this particular letter by him has been disputed by some of the earliest church commentators, Eusebius, for example) to try and prove that Yeshu was the new, permanent High Priest,...


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Rashi on that verse (citing the Talmud, Zevachim 115b), as well as Rashbam and Ibn Ezra, say that it refers to the (Jewish) firstborn, who were the ones originally designated to perform priestly duties (they lost this privilege after the sin of the Golden Calf). Chizkuni there also says that they were firstborns, but with the twist that they were a special ...


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Rav Hirsch points out that the king of S'dom, who had been saved by Avraham refused to acknowledge the good that he had done and what thanks he owed him. He instead tried to buy his position back. This shows the character traits that caused the destruction of the five cities. Melchizedek, on the other hand, came to acknowledge the miracle that Hashem had ...


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Ohr Hachayim explains that the purpose of the interruption of the story of Malki Tzedek placed immediately after stating that the King of Sedom went to see Avram is to emphasize and praise the merits of tzadikim (righteous people). The contrast is that the wicked King of Sedom came to Avram empty handed. Being a king, he was wealthy enough to at least offer ...


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Wikipedia has some interesting information about this subject (lightly edited): The Law of Moses stipulates that only the male descendants of Aaron be commissioned to serve as Jewish priests before the God of Israel and the Jewish nation. This commission is in Judaism "a covenant of everlasting priesthood" ("berit kehunat olam," Num. 25:13) and not ...


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Gan Rave says that וְהוּא כֹהֵן לְאֵל עֶלְיוֹן is talking about Avraham.


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