Now just where in your Heb 10 quote does save, salvation or Savior occur? No where. It is typical that those who want Christians to lose salvation have no scripture, but try to use passages that say nothing about salvation. Lose & salvation occur never in any single verse together.
Generally problem passages like the one you quote find their explanation if you keep reading. In this case the explanation is in 10:29:
"But we are not of them that shrink back unto perdition; but of them that have faith unto the saving of the soul. "
Heb 10 says:
"we have been sanctified through the offering of the body of Jesus Christ once for all."
"he had offered one sacrifice for sins forever,"
His sacrifice covers all sins forever.
"by one offering he hath perfected forever them that are sanctified."
That means eternal security. The believers have been set apart as special to God (sanctified), and they are perfected forever.
Since the word says
"Thou shalt call His name Jesus, for He will save His people from their sins," there is a limit to the sin of the believer.
Read Hebrews 10 completely with a mind open to the conviction of the Spirit. But better, focus on direct statements of scripture about God's promises of eternal life and the security of the one who trusts Christ as Savior. "I give them eternal life, and they shall never perish." And if a passage does not say "lose salvation," (or equivalent terms) do not twist it to mean that. There is the fact of apostasy, explained by Heb 6:9 and 1 John 2, which apostasy proves they were never part of the Body of Christ. And there is chastisement of God's people which keeps them saved and proves that they were saved. And chastisement can be severe, but it is no loss of salvation.
Heb 10:
For the law having a shadow of the good things to come, not the very image of the things, can never with the same sacrifices year by year, which they offer continually, make perfect them that draw nigh. Else would they not have ceased to be offered? because the worshippers, having been once cleansed, would have had no more consciousness of sins. But in those sacrifices there is a remembrance made of sins year by year. For it is impossible that the blood of bulls and goats should take away sins. Wherefore when he cometh into the world, he saith,
Sacrifice and offering thou wouldest not,
But a body didst thou prepare for me;
In whole burnt offerings and sacrifices for sin thou hadst no pleasure:
Then said I, Lo, I am come
(In the roll of the book it is written of me)
To do thy will, O God.
Saying above, Sacrifices and offerings and whole burnt offerings and sacrifices for sin thou wouldest not, neither hadst pleasure therein (the which are offered according to the law), then hath he said, Lo, I am come to do thy will. He taketh away the first, that he may establish the second. By which will we have been sanctified through the offering of the body of Jesus Christ once for all. And every priest indeed standeth day by day ministering and offering oftentimes the same sacrifices, the which can never take away sins: but he, when he had offered one sacrifice for sins forever, sat down on the right hand of God; henceforth expecting till his enemies be made the footstool of his feet. For
by one offering he hath perfected forever them that are sanctified. And
d their sins and their iniquities will I remember no more.
Now where remission of these is, there is no more offering for sin.
At the end of Heb is an explanatory verse:
But we are not of them that shrink back unto perdition; but of them that have faith unto the saving of the soul.
To anyone reading this, if you have been unwilling to trust Christ as Savior, and have dismissed Him as a mere chance-giver, now is the day of salvation. Trust Him now as Savior.
Thou shalt call His name Jesus, for He shall save His people from their sins.
