Genesis 14.17-20
Septuagint

exhlqe de basileuV Sodomwn eiV sunanthsin autw, meta to upostreyai auton 
apo thV kophV tou Codollogomor, kai 
twn basilewn twn met autou eiV thn koilada tou Sabu:  touto hn to pedion twn basilewn.  kai Melcisedek basileuV Salhm
exhnegken artouV kai oinon:  hn de iereuV tou qeou tou uyistou.  kai euloghse ton Abram, kai eipen, euloghmenoV Abram tw qew tw uytistw oV ektise ton ouranon kai thn ghn.  kai euloghtoV o qeoV o uyistoV, oV paredwke touV ecqrouV sou upoceiriouV soi:  kai edwken autw Abram 
dekathn apo pantwn

New Testament - Hebrews 7.1-2

outoV gar o Melcisedek, basileuV Salhm, iereuV tou qeou tou uyistou, o sunanthsaV Abraam upostrefonti 
apo thV kophV 
twn basilewn kai euloghsah auton, w kai 
dekathn apo pantwn
emerisen Abraam, prwton men ermhneuomenoV basileuV dikaiosunhV epeita de kai 
basileuV Salhm,
o estin basileuV eirhnhV
 

Septuagint

And the king of Sodom went out to meet him, after he returned from the slaughter of Chodollogomor, and the kings with him, to the valley of Saby; this was the plain of the kings.  And Melchisedec king of Salem brought forth loaves and wine, and he was priest of the most high God.  And he blessed Abram, and said, Blessed be Abram of the most high God, who made heaven and earth, and blessed be the most high God who delivered thine enemies into thy.  And Abram gave him the tithe of all

New Testament

For this Melchizedek, king of Salem, priest of God Most High, who met Abraham returning from the slaughter of the kings and blessed him, to whom also Abraham divided a tenth part of all (being first, by interpretation, King of righteousness, and then also, King of Salem, which is, King of peace

Masoretic Text

And the king of Sodom went out to meet him, after his return from the slaughter of Chedorlaomer and the kings that were with him, at the vale of Shaveh (the same is the Kings Vale).  And Melchisedek king of Salem brought forth bread and wine:  and he was priest of God Most High.  And he blessed him, and said, Blessed be Abram of God Most High, possessor of heaven and earth:  and blessed be God Most High, who hath delivered thine enemies into thy hand.  And he gave him a tenth of all

Comments:  The NT, LXX and MT agree.