Well that is not true ... As shown in the posts you ignored Kenny, Hebrews 3 and Hebrews 4 is a warning that says no one enters into Gods seventh day Sabbath rest or eternal rest (that is they are not saved) if they do not believe and obey what Gods Word says.
3:1 – Jesus is our eternal High Priest – Changing the Mosaic Law because it is a new priesthood
:2 – Comparing Jesus superior over Moses.
:4 – God maker over the universe
:5-6 Jesus not only over God’s House but in God’s House “
Followed by “The rest for the people of God” vs “The Mosaic law” So we have a
comparison between the failure of the Law and the works of the Law (no rest) to that which is of faith, not by works (eternal rest) unless you want to go back to the Law (Gal 3:1)
Past – 3:7-19 – the error of the people under the Law. The failure of the Law through lack of obedience.
19 So we see that
they could not enter in because of unbelief culminating in lack of obedience
The problem you have is that you don’t follow into the next chapter… a new covenant – new priesthood - new laws – new rest / an eternal rest... but you don't enter because of your unbelief relying on a Mosaic Law which was but a shadow of things to come.
Hebrews 10 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.
So you mined and took out of context the whole of Hebrew... which you are free to do but I won't:
Gal 2:21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain. 3 O foolish readers, who hath bewitched you, that ye should not obey the truth, before whose eyes Jesus Christ hath been evidently set forth, crucified among you? 2 This only would I learn of you, Received ye the Spirit by the works of the law, or by the hearing of faith? 3 Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh? 4 Have ye suffered so many things in vain? if it be yet in vain. 5 He therefore that ministereth to you the Spirit, and worketh miracles among you, doeth he it by the works of the law, or by the hearing of faith?
You want me to live in the shadows when I am already complete in Him.