You must be in fellowship prior to your Bible study, so that the spiritual information you receive can become a source, of blessing to your soul and produce spiritual growth.
12 For [gar] the priesthood [hierosune] being changed [metatithemi], there is made [ginomai] of [ek] necessity [anagke] a change [metathesis] also [kai] of the law [nomos]. KJV-Interlinear
12 For when the priesthood is changed, of necessity there takes place a change of law also. NASB
The law of the family priest (before Abraham's time, gave way to the Law of Moses, which is in general called the Law or the Mosaic Law. And that Law gave way to Judaism as more and more regulatory activity was piled upon the scriptures emphasizing how one acted overtly rather than how one thought. And also emphasizing salvation by works rather than salvation by grace.
This then gave way to Christianity after the Cross. Then subsequent to the Cross, many groups over the centuries (initially called Judaizers) have tried to replace or modify Christianity with many different forms of ritualistic based Christianity, again emphasizing human actions rather than the transformation of ones thinking.
The change in priesthood, from the Levitical to the pattern demonstrated by Melchizedek demanded a change in its law.
Here, the word for 'change' means to replace completely. Change does not mean to enhance the former, or to modify it but retaining some parts. This change means a total change, a total replacement. The former is thrown out and the latter comes into being.
Under the Levitical Priesthood, no man could approach God. In the desert a fence or barrier was placed between the people and the mountain. In the Tabernacle a veil was placed between the outer room and the inner room.
No one could approach God of their own volition or works. This is why the Tabernacle was designed such that in order to approach the Tabernacle, one had to first pass the alter of sacrifice (salvation), then one had to pass by the laver where washing was required (fellowship), then one had to enter into the outer room which contained the bread (doctrine) and the candlesticks (the light of Christ). Both of these represent spiritual growth to maturity. Finally came the veil which prevented anyone from approaching God.
Once the price of sin and death had been paid by Jesus Christ, then the veil was removed. On the day of Passover when Christ went to the Cross, immediately after his judgment a great storm and earthquake occurred. The veil was torn from top to bottom, removing permanently the barrier between God and man.
Jesus Christ caused this removal, not man, not mans sacrifices.
The Levitical priesthood spoke of sacrifices, and feasts, and Sabbaths which all looked forward to the Cross. Once the Cross had been accomplished, then that forward look was no longer necessary. That old priesthood was now obsolete.
The new priesthood of Melchizedek of which Christ is the reality, replaced totally, the old priesthood. The Law of sin and death and all of the sacrifices and feast observances, have now been replaced with the Law of Christ, which is the law of life.
30 'Therefore having overlooked the times of ignorance, God is now declaring to men that all everywhere should repent, 31 because He has fixed a day in which He will judge the world in righteousness through a Man whom He has appointed, having furnished proof to all men by raising Him from the dead. ' NASB
All of the sacrifices from the Levitical system have now been replaced not by men appointed by men, but by a single man who was appointed permanently by God - namely Jesus Christ.
On the Mount of Transfiguration, Peter wanted to build three tabernacles, one for Christ, one for Moses, and one for Elijah. Jesus said nothing. Then a cloud formed, overshadowing them, and a voice came out of the cloud, 'This is My beloved Son, listen to Him!' And they looked around and saw no one except Jesus alone.
In short, the Law of Moses was gone, and the Law of Christ was now in view. Look to that new law rather than clinging to the old and out dated and abrogated law.
The old law could not save. It only emphasized the need for a savior. The new law does save, and it is permanent and eternal and will never change.
The old law emphasized the need to learn by means of ritual. The new law emphasizes the need to grow up by means of doctrine, which is Christ the written word.
Now is the time to post a prayer.
End Of Lesson
Study to show thyself approved (mature) unto God, a workman that needs not to be ashamed, rightly dividing (studying/discerning), the Word of truth.