Hebrews 4:7

“Again he limiteth a certain day, etc..] Since the seventh day of the creation was a day of rest which God entered into, and not man; and since the land of Canaan was a typical rest, which the unbelieving Israelites did not enter into, because of unbelief; and yet there must be persons, and there must be a time for them to enter into the true rest which God has left a promise of; therefore he has limited, fixed, and appointed a certain day, the Gospel dispensation, for believers to enter into it: saying in David; or by David, who was the penman of the 95th psalm, as may be learned from hence; and this is agreeably to, and confirms a rule which the Jews give, that those psalms which are…”

“Again--Anew the promise recurs. Translate as the Greek order is, "He limited a certain day, 'To-day.'" Here Paul interrupts the quotation by, "In (the Psalm of) David saying after so long a time (after five hundred years' possession of Canaan)," and resumes it by, "as it has been said before (so the Greek oldest manuscript, before, namely, Heb 3:7, Heb 3:15), To-day if ye hear His voice," &c. [ALFORD].”

“Again, he limiteth - He designates, or definitely mentions. The word rendered “limiteth” - ὁρίζει horizei - means to “bound,” to set a boundary - as of a field or farm; and then to determine or fix definitely, to designate, appoint. Here it means, that he specifies particularly, or mentions expressly. A certain day - A particular time; he mentions today particularly. That is, in the time of David, he uses the word “today,” as if time was “then” an offer of rest, and as if it were then possible to enter into it. The object of the additional thought was to show that the offer of rest was not confined to the Israelites to whom it was first made; that David regarded it as existing in his day;…”

“After so long a time - It was above four hundred years from the time of Moses and Joshua to David. As it was said before - St. Paul here refers to the text he had just cited. Hebrews 4:8”

“4:7 So God set another time . . . and that time is today: The logic here is that David wrote Ps 95 much later than the wilderness debacle, so God’s rest cannot be limited to that earlier generation. The words already quoted are from Ps 95:7-8; these words encourage us not to harden our hearts when hearing God’s voice so that we might enter the rest that the people in the wilderness were denied. This opportunity is available today (see Heb 3:13).”

“saying: Heb 3:7, Heb 3:8; Sa2 23:1, Sa2 23:2; Mat 22:43; Mar 12:36; Luk 20:42; Act 2:29, Act 2:31, Act 28:25 To day: Heb 3:7, Heb 3:15; Psa 95:7 after: Kg1 6:1; Act 13:20-23 Hebrews 4:8”