You are a priest forever, in the order of Melchizedek

Hebrew 7:1-17
This Melchizedek was king of Salem and priest of God Most High. He met Abraham returning from the defeat of the kings and blessed him, and Abraham gave him a tenth of everything. First, the name Melchizedek means “king of righteousness”; then also, “king of Salem” means “king of peace.” Without father or mother, without genealogy, without beginning of days or end of life, resembling the Son of God, he remains a priest forever. 
If perfection could have been attained through the Levitical priesthood—and indeed the law given to the people established that priesthood—why was there still need for another priest to come, one in the order of Melchizedek, not in the order of Aaron?
For it is declared: “You are a priest forever, in the order of Melchizedek.”
Chapter 7 carries it forward. Jesus has superseded the Levitical priesthood by becoming a high priest for all time. This face is anticipated in Psalm 110, where the Messiah is described as a priest of a different order. The shadowy figure of Melchizedek reflects something of the nature of CHrist's priesthood - the dual role of king and priest; the timelessness of it; its superiority to the old order. Levit in a sense acknowledged this by paying Melchizedek tithes through his ancestor Abraham! If the priesthood of Aaron and his fellow Levites had been good enough, no change would have been needed. But in fact, neither these men nor the old religious system could meed the needs of sinful humanity, A different and better kind of priesthood, one not resting one he correct line of physical descent, was needed.
Why?
Jesus is in the level of Melchizedek, a priest of God most high. If the Levitical priesthood is perfect why Jesus come? Jesus Christ is a high priest forever, and not a resting priest to help people erase from sins.
Jesus is a priest forever in the order of Melchizedek, he is not a human priest.
No one knows where Melchizedek came from? when he was born?
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前面神給我們雙重的保證。因為人的軟弱，所以神用此兩事來保證。
這個指望如同大祭司可以進入內室。
照著麥基洗德的等次：耶穌不是利未支派，可是猶大支派。所以耶穌成為大祭司是超越利未人，照著麥基洗德的等次，無父無母，耶穌基督在肉身沒有家譜，出生之日，沒有起點沒有終點。不是麥基洗德沒有父母，只是沒有人知道他的身世、家譜。所以耶穌與麥基洗德相似。麥基洗德的等次超越亞伯拉罕。亞伯拉罕向麥基洗德獻上十一奉獻，利未人是亞伯拉罕的後裔，所以耶穌超越亞伯拉罕。
神沒有讓耶穌從利未支派出來，因為向來利未支派是不完全的。這個律法的身份，職分是不完全的，肉體的條例成為大祭司就有限制，有死亡。耶穌是永恆、不屬於肉體的，不朽壞的。告訴以色列人，不要再走過去的利未系統。猶太人知道所有先知都死了，不把他們當作不朽的。沒有崇拜這些先知，或是把他們當作神。這是很特別的。我們很容易造神！我們可以將屬靈長者當作榜樣，卻不將他們當作神。我們都是耶穌基督的門徒，不是這些屬靈長者的門徒。
脫去舊人，成為新人。不是按照肉體，體貼聖靈，關心永恆的生命。願我們成為新人得以承受新的生命。
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How?
Jesus is beyond Aaron, the Levites, and a high priest of God forever.