Going to put forth why I believe that Melchizedek is a “type of Christ” or type of Messiah or a version/form of him. There are some very big parallels that can be seen if we incorporate multiple verses in the OT and NT.
John 8:53-58 - "“53 Are you greater than our father Abraham, who died? And the prophets died! Who do you make yourself out to be?” 54 Jesus answered, “If I glorify myself, my glory is nothing. It is my Father who glorifies me, of whom you say, ‘He is our God.’ 55 But you have not known him. I know him. If I were to say that I do not know him, I would be a liar like you, but I do know him and I keep his word. 56 Your father Abraham rejoiced that he would see my day. He saw it and was glad.” 57 So the Jews said to him, “You are not yet fifty years old, and have you seen Abraham?” 58 Jesus said to them, “Truly, truly, I say to you, before Abraham was, I am.””
Genesis 14:17-20 - ""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). 18 And Melchizedek king of Salem brought out bread and wine. (He was priest of God Most High.) 19 And he blessed him and said, “Blessed be Abram by God Most High, Possessor of heaven and earth; 20 and blessed be God Most High, who has delivered your enemies into your hand! Then Abram gave him a tenth of everything”
In all of scripture, all of Gods kings were never priests. The Messiah is the only one who was ever called a king and a priest.
Isaiah 9:6 - ""6 For to us a child is born, to us a son is given; and the government shall be upon his shoulder, and his name shall be called Wonderful Counsellor, Mighty God,
Everlasting Father, Prince of Peace.
Hebrews 6:20 - ““20 where Jesus has gone as a forerunner on our behalf, having become a high priest forever after the order of Melchizedek.””
Melchizedek, king of Salem, priest of the Most High God, met Abraham returning from the slaughter of the kings and blessed him, and to him Abraham apportioned a tenth part of everything. He is first, by translation of his name, king of righteousness, and then he is also king of Salem, that is, king of peace. He is without father or mother or genealogy, having neither beginning of days nor end of life, but resembling the Son of God he continues a priest forever. See how great this man was to whom Abraham the patriarch gave a tenth of the spoils.