Genesis 14:17 After his return from the defeat of Chedorlaomer and the kings who were with him, the king of Sodom went out to meet him at the Valley of Shaveh (that is, the King’s Valley). And Melchizedek king of Salem brought out bread and wine. (He was priest of God Most High.) And he blessed him and said, “Blessed be Abram by God Most High, Possessor of heaven and earth; and blessed be God Most High, who has delivered your enemies into your hand!” And Abram gave him a tenth of everything. And the king of Sodom said to Abram, “Give me the persons, but take the goods for yourself.” But Abram said to the king of Sodom, “I have lifted my hand to the LORD, God Most High, Possessor of heaven and earth, that I would not take a thread or a sandal strap or anything that is yours, lest you should say, ‘I have made Abram rich.’ I will take nothing but what the young men have eaten, and the share of the men who went with me. Let Aner, Eshcol, and Mamre take their share.”
Hebrews 7:1 For this Melchizedek, king of Salem, priest of the Most High God, met Abraham returning from the slaughter of the kings and blessed him,
Psalms 7:17 I will give to the LORD the thanks due to his righteousness, and I will sing praise to the name of the LORD, the Most High.
Melchizedek disappears from the page of history as suddenly as he appears. Nothing is recorded of his family or lineage, of his life or actions. He “stands unique and isolated both in his person and in his history … his life has no recorded beginning or close”
We have no idea of where Melchizedek came from, how he came to be in Canaan, how he came to be a worshipper and priest of the true God, and how Abram came to know about him. We only know he was there. Hebrews 7:3 described Melchizedek as without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God, remains a priest continually. Some have thought him to be more than a mere man, even the Son of God himself, but he is manifestly distinguished from him in Hebrews 7:3; he seems to be what Josephus (k) says he was, a Canaanitish prince, a pious and religious man, eminently raised up by God, and whose genealogy was kept a secret, that he might be in this as in other things a type of Christ. Melchizedek was a type of Christ, who comforts and refreshes his hungry and weary people with himself, the bread of life, and with the wine of his love, as well as his name and title agree with him, who is a righteous King and Prince of Peace. (Gill)
Of the property belonging to the king of Sodom, which he had taken from the enemy, Abram would not keep the smallest part, because he would not have anything in common with Sodom. On the other hand, he accepted from Salem’s priest and king, Melchizedek, not only bread and wine for the invigoration of the exhausted warriors, but a priestly blessing also, and gave him in return the tenth of all his booty, as a sign that he acknowledged this king as a priest of the living God, and submitted to his royal priesthood. In this self-subordination of Abram to Melchizedek there was the practical prediction of a royal priesthood which is higher than the priesthood entrusted to Abram’s descendants, the sons of Levi, and foreshadowed in the noble form of Melchizedek, who blessed as king and priest the patriarch whom God had called to be a blessing to all the families of the earth. (Keil and Delitzsch)
Abram – I have lifted up my hand. – This is a serious matter with Abram. Either before, or then and there, he made an oath or solemn asseveration before God, with uplifted hand, that he would not touch the property of Sodom. He must have felt that there was danger of moral contamination in coming into any political relationship with the cities of the vale. “The Lord, the Most High God, the Founder of heaven and earth.” In this conjunction of names Abram solemnly and expressly identifies the God of himself and of Melkizedec in the presence of the king of Sodom. (Barnes)
As mysterious as Melchizedek’s origin and the ending are, I find the section where Abram tells the King of Sodom; “I have lifted my hand to the LORD, God Most High, Possessor of heaven and earth, that I would not take a thread or a sandal strap or anything that is yours. He made a pledge to God to keep free from anything associated with Sodom, save is nephew, Lot. We do well to do likewise with things of this world polluted with things that do not honor or glorify Jesus Christ. It was more important for Abram to remain in reverant reliance in God and His promises than what might be offered by man.