Are you suggesting, that verse 1 of Chapter 3, only refers to Jewish believers?
Not at all, Gentile believers can benefit from the Book of Hebrews as well.
That doesn't change the fact that it was written to Hebrews and the Book has to be interpreted with that in mind. When it was written, it was not written to Gentiles.
Hebrews 3
King James Version (KJV)
1 Wherefore, holy brethren, partakers of the heavenly calling, consider the Apostle and High Priest of our profession, Christ Jesus;
If so, then show this from the context. here is what Paul wrote;
Why do you demand it be shown from the context. I have shown you numerous errors you make and you ignore them and continue to preach your false gospel.
Nevertheless, we do see in the context that in view...are unbelievers:
Hebrews 3
King James Version (KJV)
5 And Moses verily was faithful in all his house, as a servant, for a testimony of those things which were to be spoken after;
6 But Christ as a son over his own house; whose house are we, if we hold fast the confidence and the rejoicing of the hope firm unto the end.
Right there he establishes what defines actually being of the House of Christ.
Understand?
Now, He enters into the warning which is based on the premise of not holding fast the confidence and rejoicing of the hope firm unto the end:
7 Wherefore (as the Holy Ghost saith, To day if ye will hear his voice,
8 Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
9 When your fathers tempted me, proved me, and saw my works forty years.
10 Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways.
11 So I sware in my wrath, They shall not enter into my rest.)
12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
See that "wherefore?" It is linked to the "if" of v.6.
And what he does is show why those in the Wilderness did not enter rest, and the warning is why one would not enter rest in the writer's day, seen in v.12...
...having an evil heart of unbelief. Not being a believer then sinning, but simply being an unbeliever.
He reiterates why they didn't enter rest...
Hebrews 3:18-19
King James Version (KJV)
18 And to whom sware he that they should not enter into his rest, but to them that believed not?
19 So we see that they could not enter in because of unbelief.
He will do this again in Chapter 4:
Hebrews 4
King James Version (KJV)
1 Let us therefore fear, lest, a promise being left us of entering into his rest, any of you should seem to come short of it.
2 For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.
3 For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.
There is no "we" in v.1, it is "any of you, who are his Hebrew brethren.
The good news of rest to Israel did not profit them because...they did not have faith.
We which do believe...do enter in the Rest Christ provides.
The only ones in danger of not entering into His Rest are those who have an evil heart of unbelief.
And I will point out the "promise being left us" is defined as the Promise made to Israel, not to Christians (who have already entered into His Rest through faith and belief):
Hebrews 4:8-9
King James Version (KJV)
8 For if Jesus had given them rest, then would he not afterward have spoken of another day.
9 There remaineth therefore a rest to the people of God.
Israel is the "people of God" here, not Christians.
"Jesus" in v.8 is not speaking about Christ, it is speaking of Joshua.
You, like all who teach loss of salvation...always make those clearly identified as unbelievers to be Christians. You can't do it here, just as you can't do it in Chapter 10.
Continued...