Here is what the writer of Hebrews stated...
Heb 9:12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
Heb 9:13 For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifieth to the purifying of the flesh:
Heb 9:14 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?
Heb 9:15 And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
Heb 9:16 For
where a testament is, there must also of necessity be the death of the testator.
Heb 9:17 For
a testament is of force after men are dead: otherwise it is of no strength at all while the testator liveth.
Heb 9:18 Whereupon neither the first testament was dedicated without blood.
Heb 9:19 For when Moses had spoken every precept to all the people according to the law, he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and sprinkled both the book, and all the people,
Heb 9:20 Saying,
This is the blood of the testament which God hath enjoined unto you.
Heb 9:21 Moreover he sprinkled with blood both the tabernacle, and all the vessels of the ministry.
Heb 9:22 And almost
all things are by the law purged with blood; and without shedding of blood is no remission.
Heb 9:23 It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.
Heb 9:24
For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us:
Heb 9:25
Nor yet that he should offer himself often, as the high priest entereth into the holy place every year with blood of others;
Heb 9:26
For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
Heb 9:27 And as it is appointed unto men once to die, but after this the judgment:
Heb 9:28 So
Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
Heb 10:1 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.
Heb 10:2 For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.
Heb 10:3 But in those sacrifices there is a remembrance again made of sins every year.
Heb 10:4 For it is not possible that the blood of bulls and of goats should take away sins.
Heb 10:5 Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
Heb 10:6 In burnt offerings and sacrifices for sin thou hast had no pleasure.
Heb 10:7 Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.
Heb 10:8 Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law;
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.
Heb 10:10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Heb 10:11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Heb 10:12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
Heb 10:13 From henceforth expecting till his enemies be made his footstool.
Heb 10:14 For by one offering he hath perfected for ever them that are sanctified.
Heb 10:15 Whereof the Holy Ghost also is a witness to us: for after that he had said before,
Heb 10:16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
Heb 10:17 And their sins and iniquities will I remember no more.
Heb 10:18 Now where remission of these is, there is no more offering for sin.
Heb 10:19 Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus,
Heb 10:20 By a new and living way, which he hath consecrated for us, through the veil, that is to say, his flesh;
Heb 10:21 And having an high priest over the house of God;
Heb 10:22
Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.
Heb 10:23 Let us hold fast the profession of our faith without wavering; (for he is faithful that promised
Heb 10:24 And let us consider one another to provoke unto love and to good works:
Heb 10:25 Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.
Heb 10:26 For
if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Heb 10:27
But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
Heb 10:28
He that despised Moses' law died without mercy under two or three witnesses:
Heb 10:29
Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?
Heb 10:30 For we know him that hath said, Vengeance belongeth unto me, I will recompense, saith the Lord. And again, The Lord shall judge his people.
Heb 10:31 It is a fearful thing to fall into the hands of the living God.
Heb 10:32 But call to remembrance the former days, in which, after ye were illuminated, ye endured a great fight of afflictions;
Heb 10:33 Partly, whilst ye were made a gazingstock both by reproaches and afflictions; and partly, whilst ye became companions of them that were so used.
Heb 10:34 For ye had compassion of me in my bonds, and took joyfully the spoiling of your goods, knowing in yourselves that ye have in heaven a better and an enduring substance.
Heb 10:35 Cast not away therefore your confidence, which hath great recompence of reward.
Heb 10:36 For ye have need of patience, that, after ye have done the will of God, ye might receive the promise.
Heb 10:37 For yet a little while, and he that shall come will come, and will not tarry.
Heb 10:38 Now the just shall live by faith: but if any man draw back, my soul shall have no pleasure in him.
Heb 10:39 But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.
There is no sin cloak with the blood of Christ. The blood of Christ PURGES sin once and for all. That is why Hebrews 10:26 says what it does.
Many people don't believe that verse because they think the blood of Christ cloaks ongoing sinning. These people deny the purging of sin by the blood of Jesus and in effect deny Christ.
The Bible means what it says. It is not complicated. One does not need a theologian to reveal the simplicity of the turth. Sure there are many mysterious things but when it comes to redemption the simplicity that is in Christ is the doctrine according to godliness whereby we are made the righteousness of God IN Him via abiding in the Spirit of His life.
Don't be deceived by all those who deny the purging of sin and the subsequent result of a pure heart.
Purity is key.
God bless.