THE NAME IS MENTIONED JUST TWICE IN THE OLD TESTAMENT. The Canaanite king of the city of Salem (identified as Jerusalem) and priest of God Most High (El Elyon), Melchizedek met Abram when the latter was returning victorious from battle (Genesis 14:18-20). In Genesis 14 verse 22, Abram says essentially: “‘Melchizedek calls his God ‘El Elyon’, I call my God Yahweh, but we worship the same God.’ No where in the Bible is there such a statement about a Canaanite God.” (Broadman).
Later in Ps. 110.4, the Psalmist merges royal and priestly power by appropriating the order of Melchizedek, the king-priest. Material from the Dead Sea Scrolls portrays Melchizedek as a heavenly being who will bring salvation (in fulfillment of Isa. 52.7-10 and 61.1-3) and judgment (in fulfillment of Ps. 7.7-8; 82.1-2) at the conclusion of the final jubilee (Lev. 25). (oxfordbiblicalstudies.com)
THE NAME AS USED IN THE NEW TESTAMENT BOOK OF HEBREWS (Broadman): The author of the letter to the Hebrews, citing Psalm 110.4, argues that Jesus is a priest forever after the order of Melchizedek (Heb. 5.6, 10; 6.20; 7.17). This argument places the emphasis of the role of Christ as that of High Priest.
Paul’s theology emphasizes Christ as Saviour. In his letters, Paul stresses the role of Jesus as Saviour: that through His sacrificial death, Christ as Saviour redeemed mankind from the curse of the law and the power of the flesh, preventing eternal separation from a righteous God.
The theology in Hebrews does not differ regarding the role of Christ as Savior, but places emphasis on the role of Christ as High Priest. As our High Priest, after we have accepted His miraculous salvation, Christ will take us into a remarkable knowledge of an unseen world where we can be in the very presence of God.