Seeing therefore it remaineth that some must enter therein, and they to whom it was first preached entered not in because of unbelief:
It remaineth - still to be realized.
Some must enter. The denial of entrance to unbelievers is a virtual promise of entrance to believers. God wishes not His rest to be empty, but furnished with guests (Luke 14:23).
They to whom it was first preached entered not - `they who first (in Moses' time) had the Gospel preached to them;' namely, in type, note, Hebrews 4:2.
Unbelief, х apeitheian (G543)] - rather, 'disobedience' (note Hebrews 3:18).