There certainly seems to be a sense in which members of the visible church are indeed "sanctified" or "set apart" even though they may be only outward professors. Just as children of believing parents are "sanctified" without necessarily being regenerate.

So, in the Hebrews text, this is not speaking of true believers who might subsequently lose their salvation.

__________________
Jim
1689 LBCF
Independent Bible Church
North Texas, USA