Hebrews 2:11 KJVS
 For both he that sanctifieth and they who are sanctified are all of one: for which cause he is not ashamed to call them brethren,
Some Christian denominations view the body of Christ as a figure of speech and some view the body of Christ literally, to the point where communion is the actual body and blood of Christ. Both view points miss a important spiritual facet regarding the Lord and his body, the ecclesia. It is only by being in the body of Christ, 1 Co 12:27, that a person can be sanctified and reach spiritual maturity/perfection.
John 17:23 KJVS
 I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.
I once heard a woman preacher on the radio say to her congregation one broadcast, that members of the church would never reach perfection in their lifetimes. Why then did the author of Hebrews say the following through the power of the Holy Spirit?
Hebrews 6:1-3 KJVS
 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,  Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.  And this will we do, if God permit.
A good deal of the Christian world are unaware of the sin sacrifice altar outside the camp that is mentioned in He 13:10.
Hebrews 13:9-11 KJVS
 Be not carried about with divers and strange doctrines. For it is a good thing that the heart be established with grace; not with meats, which have not profited them that have been occupied therein.  We have an altar, whereof they have no right to eat which serve the tabernacle.  For the bodies of those beasts, whose blood is brought into the sanctuary by the high priest for sin, are burned without the camp.
I cover this concept in more detail in this article http://www.justifiedfreely.com/?p=178 There are two offerings involved with the day of atonement sacrifice which, by type and shadow, pointed to the sacrifice of Jesus Christ, the Messiah. The offering of his blood on the altar in heaven and the offering of his body, on the sin sacrifice altar, He 13:10&11. It can be difficult extrapolating meanings from the types and shadows of the Old Testament sacrifices conducted under the law, in relationship to the realities that are contained in the sacrifice of Jesus Christ, because of this verse.
Hebrews 10:1 KJVS
 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
Since the law is not the very image of the things to come, we have to rely on what the New Testament scriptures say regarding sanctification, always bearing in mind that the sacrifices and offerings under the law, were carnal ordinances and made no one perfect, He 9:10. I don’t think there is a chapter in the bible that I have read and studied more extensively than the tenth chapter of Hebrews. This chapter touches upon the sanctification of the body of Christ using images and terminology from the law. The chapter makes reference to sacrifices and offerings that the Hebrew Christians were well aware of at the time, because their lives were and had revolved around the Temple and the law of Moses associated with the Temple. The offerings burned on the sin sacrifice altar, were the dead carcasses of animals sacrificed for sin. These carcasses were burned to ashes on this altar and then the ashes were then used by the Levite priests for purification, He 9:13&14. This designated altar on the Mount of Olives was outside the ritual clean area of the city of Jerusalem. The types and shadows of the law with its sacrifices and offerings for sin, are not sharp or clearly defined types and shadows of the reality of the sacrifice and offering of Jesus Christ. None the less, it needs to be understood that perfection or being sanctified for a member of the body of Christ, is due to the offering of the body of Christ, once for all, presumedly on that figurative altar outside the camp.
Hebrews 10:10 KJVS
 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Some insight can be gained from a few verses in Romans that can easily be overlooked due to the numerous scripture verses in the New Testament.
Romans 12:1 KJVS
 I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.
Romans 15:16 KJVS
 That I should be the minister of Jesus Christ to the Gentiles, ministering the gospel of God, that the offering up of the Gentiles might be acceptable, being sanctified by the Holy Ghost.
The offering up of the Gentiles can only be “in Christ” because the ecclesia is the Lord’s body, Eph 5:30, and is where sanctification takes place, Jn 17:23. But just how this sanctification process works itself out in our flesh is not readily apparent from the types and shadows of the Old Testament law of Moses. Obviously fire was used at the sin sacrifice altar to burn up or purify the bodies of the sin sacrifice animal, He 13:11. Actual fire is not used with the body of Jesus Christ but the image of fire is used by the Apostle Peter and is also used in other books of the bible connected with being purified and sanctified.
1 Peter 4:12-13 KJVS
 Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange thing happened unto you:  But rejoice, inasmuch as ye are partakers of Christ’s sufferings; that, when his glory shall be revealed, ye may be glad also with exceeding joy.
Isaiah 48:10 KJVS
 Behold, I have refined thee, but not with silver; I have chosen thee in the furnace of affliction.
Fire, altars and activities associated with the law of Moses are often alluded to in the New Testament scriptures and are associated with sanctifying those who are chosen by God to reign with Jesus Christ, Just as the carcass of the animals used for the sin offering were burned to ash, this by type, holds true for sinful flesh of the members of the corporate body of Christ.
Ro 6:6 knowing this, that our old humanity was crucified together with Him, that the body of Sin may be nullified, for us by no means to be still slaving for Sin,
7 for one who dies has been justified from Sin. CLV
I used the Concordant Literal Translation for the above verse as it uses the word justified in verse 7 rather than the word freed which is used in the King James version. The Strong’s Concordance number for the Greek word translated into “freed” in the King James Version is G1344 and is the word translated as justified in most other uses in the NT. Dying to the flesh can be a painful process with a good deal of suffering involved, 1 Pe 4:1&2. We read in Hebrews 12:6, that God scourges the sons he loves and the Greek word translated as chastening and its word usage in the New Testament is paste below, taken from the Strong’s Concordance embedded in the bible software on my iPad.
Parts of Speech
1. the whole training and education of children (which relates to the cultivation of mind and morals, and employs for this purpose now commands and admonitions, now reproof and punishment) It also includes the training and care of the body
2. whatever in adults also cultivates the soul, esp. by correcting mistakes and curbing passions.
a. instruction which aims at increasing virtue
b. chastisement, chastening, (of the evils with which God visits men for their amendment)
Usage by Word
chastening (3), chastisement (1), instruction (1), nurture (1)
Usage by Book
Ephesians, 2 Timothy, Hebrews
Oddly enough, I have cited this Greek word and definitions for years. The first article I wrote for this web site contained the definition for this word also. And yet, I never really keyed in on the “(of the evils with which God visits men for their amendment)” part of the definition. Which brings the book of Job to mind. My whole life seems to have been visited by evils that were a result of my actions or suddenly visited on me by chance. Or at least I thought so at the time. In retrospect a few of these times in my life, the evils that were visited on me, were by the leave of God for my amendment. Although I did not recognize it at the time. I was, an am still to some extent, thick headed, stubborn and slow to learn but I will say I am developing a kinder and more caring heart. God will do whatever it takes to straighten a person out, and instill the fruit of the Spirit in us, He 12:11. This whole presentation of God being a kindly Father in the heavens showering material blessings on His children feeds into the money grubbing religious institutions of today. If you bless them with ten percent of your increase, God will bless you with material blessings, with health and a long life to boot. Few indeed realize what the blessings of Abraham are in Christ, and what these blessings really entail.
Acts 3:25-26 KJVS
 Ye are the children of the prophets, and of the covenant which God made with our fathers, saying unto Abraham, And in thy seed shall all the kindreds of the earth be blessed.  Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
Abraham’s blessings for those of us in the body of Christ are God, due to the sacrifice of our Lord, turning us away from our iniquities. Which is slowly accomplished by God writing His laws on our minds and hearts and the eventual destruction of the sin nature within us, Ro 6:6-7. The definition of iniquities is depravity, iniquity, wickedness, malice, evil purposes and desires. None of which we can be turned away from, easily or painlessly, 1Pe 4:1-2. When you buy or acquire a little puppy you have to housebreak them. One method often used when the puppy makes a mess in the house, is you swat them with a rolled up newspaper and push their nose in the mess they made. Probably a apt analogy, in that judgement begins at the house of God, whose house we are, 1 Pe 4:17, He 3:6. If you read the scriptures frequently you will constantly be shown the areas of sin in your life. I can readily relate to King David when he said his sin was ever before him, Ps 51:3. We lack the ability to control and overcome our sin nature on our own, but still our inner man delights in the law of God, Ro 7:18-22, and desires to please Him. All the while this internal pressure is taking place, God is chastising and whipping the sons He loves, He 12:6&7, because of the sin and lack of godliness in their lives. We very much so, are caught between a rock and a hard spot. Of course we should all know the rock is Christ, 1 Co 10:4. In the end, our sin nature will be destroyed by a cooperative effort between man and the Spirit of God.
Romans 8:13 KJVS
 For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
Eventually we will become obedient to the will of the Father, Ro 6:6, He 5:8, 1 Pe 4:1. And the various trials, sufferings, afflictions, chastisements and even persecutions in life, are the fuel God uses at the sin sacrifice altar, to burn up the body of the sin sacrifice, which is the flesh of body of Christ.
Romans 6:6 KJVS
 Knowing this, that our old man is crucified with him , that the body of sin might be destroyed, that henceforth we should not serve sin.