The first reference in the New Testament to His blood stresses this aspect. Jesus said, at the last supper: "This is my blood of the new testament (same as 'covenant') which is shed for many for the remission of sins" (Matthew 26:28). Let no one, therefore, even count the "blood of the covenant...an unholy thing" (Heb. 10:29), for the blood of Christ is forever innocent, infinitely precious, perfectly justifying, always cleansing and fully sanctifying.
Scripture:
(Acts 20:28) Take care and be on guard for yourselves and the whole flock over which the Holy Spirit has appointed you bishops and guardians, to shepherd (tend and feed and guide) the church of the Lord or of God which He obtained for Himself [buying it and saving it for Himself] with His own blood.
(Ephesians 1:7) In Him we have redemption (deliverance and salvation) through His blood, the remission (forgiveness) of our offenses (shortcomings and trespasses), in accordance with the riches and the generosity of His gracious favor,
(Collosians 1:14) In Whom we have our redemption through His blood, [which means] the forgiveness of our sins.
(1 Peter 1:18) You must know (recognize) that you were redeemed (ransomed) from the useless (fruitless) way of living inherited by tradition from [your] forefathers, not with corruptible things [such as] silver and gold,
(Revelations 5:9) And [now] they sing a new song, saying, You are worthy to take the scroll and to break the seals that are on it, for You were slain (sacrificed), and with Your blood You purchased men unto God from every tribe and language and people and nation.
(Collosians 1:20) And God purposed that through (by the service, the intervention of) Him [the Son] all things should be completely reconciled back to Himself, whether on earth or in heaven, as through Him, [the Father] made peace by means of the blood of His cross.
(Hebrews 13:12) Therefore Jesus also suffered and died outside the [city's] gate in order that He might purify and consecrate the people through [the shedding of] His own blood and set them apart as holy [for God].
(Hebrews 13:20) Now may the God of peace [Who is the Author and the Giver of peace], Who brought again from among the dead our Lord Jesus, that great Shepherd of the sheep, by the blood [that sealed, ratified] the everlasting agreement (covenant, testament),
(Matthew 26:28) For this is My blood of the new covenant, which [ratifies the agreement and] is being poured out for many for the forgiveness of sins.
(Hebrews 10:29) How much worse (sterner and heavier) punishment do you suppose he will be judged to deserve who has spurned and [thus] trampled underfoot the Son of God, and who has considered the covenant blood by which he was consecrated common and unhallowed, thus profaning it and insulting and outraging the [Holy] Spirit [Who imparts] grace (the unmerited favor and blessing of God)?
(Revelations 12:11) And they have overcome (conquered) him by means of the blood of the Lamb and by the utterance of their testimony, for they did not love and cling to life even when faced with death [holding their lives cheap till they had to die for their witnessing].
(Matthew 27:4) Saying, I have sinned in betraying innocent blood. They replied, What is that to us? See to that yourself.
(I Peter 1:9) [At the same time] you receive the result (outcome, consummation) of your faith, the salvation of your souls.
(I John 1:7) But if we [really] are living and walking in the Light, as He [Himself] is in the Light, we have [true, unbroken] fellowship with one another, and the blood of Jesus Christ His Son cleanses (removes) us from all sin and guilt [keeps us cleansed from sin in all its forms and manifestations].