Sanctification inwardly !
Heb 13:12
12 Wherefore Jesus also, that he might sanctify the people with his own blood, suffered without the gate.
All for whom Christ died, by it [ His Death] it was to provide a inward sanctification as well, not only are they sanctified in the Divine Purpose of God as was Jeremiah 1:5
5 Before I formed thee in the belly I knew thee; and before thou camest forth out of the womb I sanctified thee, and I ordained thee a prophet unto the nations.
BTW this sanctification applies to all the foreknown People of God Rom 11:2; Rom 8:29, but His Death communicates an inward sanctification which is consistent with the sanctification in His Purpose, hence by His Blood / Death, all for whom He died has their conscious purged from dead works, to serve the Living God Heb 9:14
14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
Notice what the Blood of Christ is said to do, to purge our conscience. The word purge is the word καθαρίζω and means:
I cleanse, make clean, literally, ceremonially, or spiritually, according to context.
And the word conscience suneidésis:
the conscience, a persisting notion.
properly, joint-knowing, i.e. conscience which joins moral and spiritual consciousness as part of being created in the divine image. Accordingly, all people have this God-given capacity to know right from wrong because each is a free moral agent
The conscience is part of the inward man, and the blood of Christ is said to cleanse it.
Cleanse it from what ? Dead Works ! What are Dead Works ? Religious works performed by dead men, dead spiritually ! Its religion without God given Faith. Its not worshiping God in Spirit and in Truth as Per Jn 4:23-24
23 But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him.
24 God is a Spirit: and they that worship him must worship him in spirit and in truth.
Well, Christ's Blood provides God with those type of worshippers that God the Father seeketh such to Worship Him!
The Blood of Christ sets apart God's People experientially, from dead men religion which is Idolatry. It redeems them from a vain religious life received by tradition of our fathers 1 Pet 1:18-19
18 Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers;
19 But with the precious blood of Christ, as of a lamb without blemish and without spot:
Thats dead works also of Heb 9:14 this vain[devoid of truth] conversation received by tradition.
Now understand this, if each person for whom Christ died, shed His Blood, does not experience this conversion, this Sanctification from dead works, unto serving [worship] of the True and Living God, then His Blood has lost its Value and Purpose, it has miserably failed the Divine Purpose !
But I know that it will, to the Glory of God !