For this Melchisedec, king of Salem, priest of the most high God, who met Abraham returning from the slaughter of the kings, and blesse To whom also Abraham gave a tenth part of all; first being by interpretation King of righteousness, and after that also King of Salem, which is, King of peace;Without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually. Hebrews 7:1-3
As you continually read through the book of Hebrews, you notice that its really emphasizing the role of Jesus as our High Priest. Here we see a figure Melchizedek, that is referenced with Christ. Some scholars believe this figure actually was Christ when he met Abraham.
Melchizedek was an intriguing character in the Bible, as he almost appears God-like, which is why many believe its Christ himself. It says basically he is eternal and a King of Righteousness. The really interesting thing is he introduced bread and wine to Abraham (Genesis 14:18) obviously a foreshadow of Communion that Christ introduced to us
Now consider how great this man was, unto whom even the patriarch Abraham gave the tenth of the spoils. And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham: But he whose descent is not counted from them received tithes of Abraham, and blessed him that had the promises. Hebrews 7:4-6
Notice how exalted this Melchizedek is that he received a tithe from Abraham, the father of Israel. This I believe is more evidence that this was actually Christ , showing his priesthood authority over everyone including Abraham
And without all contradiction the less is blessed of the better. And here men that die receive tithes; but there he receiveth them, of whom it is witnessed that he liveth. Hebrews 7:7-8
Melchizedek blessed Abraham when he met him, it states in the scripture that “the less is blessed by the better” Meclchizedek was considered greater than Abraham, which is a profound statement since we all know Abraham is the patriarch of Israel
Also notice it ends with “He Liveth” meaning hes immortal, we know Christ lives yesterday, today, and forever! As Jesus said “Before Abraham was I AM” (John 8:58)