Hebrews 4:6

“Seeing therefore it remaineth, etc..] It follows by just consequence, that some must enter therein; for God's swearing concerning some, that they should not enter into his rest, supposes that others should: and they to whom it was first preached; to whom the Gospel was first preached, namely, the Israelites in the wilderness: entered not in because of unbelief; (see <580319>Hebrews 3:19).”

“it remaineth--still to be realized. some must enter--The denial of entrance to unbelievers is a virtual promise of entrance to those that believe. God wishes not His rest to be empty, but furnished with guests (Luk 14:23). they to whom it was first preached entered not--literally, "they who first (in the time of Moses) had the Gospel preached to them," namely, in type, see on Heb 4:2. unbelief--Greek, rather "disobedience" (see on Heb 3:18).”

“Seeing therefore it remaineth that some must enter therein - That is, “Since there is a rest spoken of in the Scriptures, implying that it is to be enjoyed by some, and since they to whom it was first promised did not inherit it, it follows that it must still be in reserve.” This is the conclusion which the apostle draws from the argument in the previous verses, and is connected with Hebrews 4:9, where he says that “there remaineth a rest to the people of God” - the point to which the whole argument tended. The statement in Hebrews 4:7, Hebrews 4:8, is to be regarded as an “interruption” in stating the conclusion, or as the suggestion of a new thought or a new argument bearing on the…”

“4:6 So God’s rest is there: Building on the discussion in 4:3-5, the author is about to argue that the promised rest is still available (4:7-10). But those who wandered in the wilderness, even though they heard the good news that the Promised Land was open to them, failed to enter because they disobeyed God (see Num 14:1-25; Deut 1:19-46; Ps 106).”

“it remaineth: Heb 4:9; Co1 7:29 some: Num 14:12, Num 14:31; Isa 65:15; Mat 21:43, Mat 22:9, Mat 22:10; Luk 14:21-24; Act 13:46, Act 13:47; Act 28:28 they: Heb 4:2, Heb 3:19; Gal 3:8 it was: or, the gospel was entered: Heb 3:18, Heb 3:19 Hebrews 4:7”