For those who are interested, the word "sanctified" and "holy" are the same as used through out the New Testament.
Heb 10:9 Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
13 From henceforth expecting till his enemies be made his footstool.
14 For by one offering he hath perfected for ever them that are sanctified.
In this passage the point that "holiness" by the law demanded obedience to the written code. But for a believer we have been made holy and perfected by the Blood of Christ.
Now the "holiness" we have is not that from obedience to written rules and standards, but the "holiness" of Gods Spirit as one walks in faith.
For it is written that Christ Himself has been made unto us "holiness".
Ac 26:18 To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.
Ro 1:4 And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:
Ro 15:16 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.
Now one can claim they have a form of holiness based upon their religious works... or lawkeeping etc.. but this sort of religious holiness has nothing to do with the truth of the gospel.
The term "holy" in effect means separated unto God, above what is common. Now this power comes only in that one "walks in the spirit" and if one is really walking in the spirit, they will manifest the fruits of the spirit. These fruits alone describe what is holy unto God and that which he accepts through faith in Christ.
Ga 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
23 Meekness, temperance:
Now thankfully I was delivered from a "holiness" religious group. I have seen and do testify that all those who seek to work holiness through the flesh and religious works and rules, are NEVER holy, on the contrary they are bitter, jealous, full of envy and strife, covetousness, hypocricy, wrath etc..