I wonder whether you can read English or not because I answered you about it many times already:
Repeatedly I answered you that it is the way of identifying the same person by starting the resemblance each other, by mentioning the common points each other as proofs that both are the same .
You must note that Heb writer is comparing both of the same identity, between Pre-Incarnate Jesus Christ and Post-Incarnate Jesus Christ , saying : "made like unto" each other. If you want to insist on different identities, yes, you can say both are different in terms of Pre-Incarnate and Post Incarnate Jesus Christ.
Do you have no end of life? You are comparing yourself to Messiah and therefore you cannot understand the way of Bible explanation.
How many people on this earth have no end of life? You never answered my questions because you cannot.
You don't believe Bible as it says:
Melchizedek has no end of life, no beginning of days, remain Continual Priest.
Moreover, you must think about Melchizedek once again,
after he met Abraham in Gen 14, did he die and disappear?
Then who was the priest after that until Jesus took the office of the High Priest? How can Bible say God made an oath that Jesus become the eternal priest in succession to Melchizedek?
How could he be called King of Salem where the Tabernacle of God is located? Are you confused between Salem and Jerusalem?
You mentioned David's righteousness mentioned numerous times, but never presented even single illustration from the Bible. Have you ever heard about these confessions?
Isaiah 61:10
10 I will greatly rejoice in the LORD, my soul shall be joyful in my God; for he hath clothed me with the garments of salvation, he hath covered me with the robe of righteousness,
Isaiah 64:6
But we are all as an unclean thing, and all our righteousnesses are as filthy rags .
Dan 9:7
O Lord, righteousness belongeth unto thee.
Who can be King of Salem? Do you know Salem means Peace? Have you ever read Isaiah 9:6 which says "The Prince of Peace" ?