Hi again Blik, the thing about
OSAS is this, you have to be "
Once Saved" before you can be "
Always Saved" (and just 'claiming' to be a Christian doesn't mean that you are one ... even if you 'believe' that you are as well).
The passage you posited for us from
Hebrews 10 concerns 1st Century Jews
(who were probably affiliated with the 1st Century Church in some way) who both knew and understood all that they needed to know about Jesus to be saved by Him ... but the continued to reject Him anyway! For them,
no sacrifice for sins was left, only a fearful expectation of judgment.
'True' Christians do not
keep on sinning deliberately* once they've become Christians, but these folks did (and not just any sin, rather, the sin that we know that they were guilty of committing was their continual rejection of Jesus).
Like I just said, for someone to be "Always Saved", they have to be "Once Saved" first, and the folks spoken of here in
Hebrews 10:26-27 ~never~ were. There is, in fact, no indication in the text that they either claimed and/or believed themselves to be Christians, just that they
1. knew who Jesus was/why they needed to receive Him as their Lord and Savior and that
2. they never acted upon that knowledge/continued to reject Him.
~Deut
p.s. - Christians act like Christians (for the most part), even when we sin, yes?
*(The claim of someone who 1. says that they have become a Christian, but who 2. continues on in deliberate sin/a sinful lifestyle, should not be believed. If the changes that God makes in the hearts and lives of all of us who are His are never outwardly apparent in the behavior of someone who claims to be a Christian, then their "claim" should not be considered as anything more than that)
.