So let's focus on that scripture you posted...
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,
So, it doesn't say 100 times... it says if you sin willfully (Even ONCE).... well.. who doesn't or hasn't? So in your own profession of faith, you are going to hell and you cannot receive anymore sacrifice for your sins.
Do people read the Word? It says if you sin willfully.. then there is no more sacrifice ever again. Tell me it does not say that? So now, who hasn't sinned willfully after receiving Christ? Based on this definition, Heaven will be empty. Let's try and really read the context of scripture. Really, if we sin, then POOF, Jesus never covers our sins again; even if it's ONE SIN... that's what you just said by quoting the scripture out of context. Doesn't matter who you are, it's what it says? Sigh!
Even taking it for what it says IN CONTEXT (indeed if it's talking about a saved person), again, none will go to heaven, b/c we have ALL sinned at least ONE TIME since we accepted Christ. Again... Sigh!
God loves you all! I pray you seek the scriptures and allow the Holy Spirit to guide you into truth. The way this scripture was just quoted is not truth. If it is, then all us sinners are going some place other than heaven
Blessings in the Lord Jesus
EPIALES
I think you are misunderstanding what it means to sin willfully. When we sin we fail the test in that moment of temptation, but we grow in Christ and try not to fail that test again- that is just sinning, but it is not sinning willfully. Sinning willfully means premeditated, without goal or effort to stop. It means to use Christ's blood as a license to sin on purpose. It means the temptation didn't come to you, but you went to it. That you sought out ways to disobey God just for the pleasure of it. It sounds like something a Christian wouldn't do, but it's in the bible because it does happen.
And I'm not saying someone can't repent of this and make things right with God again. A prodigal son can return to the father, but is unsafe until he does- meaning if he dies before returning he will not go to heaven. The one who cannot return is the one who leaves God for another god. For example, I have been a Christian all my life, I have spiritually tasted and known that God is good, I have known and recognised the truth for many years now. But if I were to leave it now and become Muslim for example, I can never come back because I publicly put God and the truth to shame, and to come back would be like crucifying my Lord for a second time on my behalf.
Sad to comprehend, but genuine Christians do leave God and/or disown God. That's why He says if you remain faithful till the end you will be saved.