Hebrews 3:16

Were they not all that came out of Egypt - An awful consideration! The whole elect people of God (a very few excepted) provoked God presently after their great deliverance, continued to grieve his Spirit for forty years, and perished in their sin!

For some, when, they had heard,....

For some, when they had heard, did provoke - There is a various reading here, which consists merely in the different placing of an accent, and yet gives the whole passage a different turn: - τινες, from τις, who, if read with the accent on the epsilon, τινὲς, is the plural indefinite, and signifies some, as in our translation; if read with the accent on the iota, τίνες, it has an interrogative meaning; and, according to this, the whole clause, τίνες γαρ ακουσαντες παρεπικραναν; But who were those hearers who did bitterly provoke? αλλ’ ου παντες οἱ εξελθοντες εξ Αιγυπτου δια Μωσεως; Were they not all they who came out of the land of Egypt by Moses?

For some--rather interrogatively, "For WHO was it that, when they had heard (referring to 'if ye will hear,' Heb 3:15), did provoke (God)?" The "For" implies, Ye need to take heed against unbelief: for, was it not because of unbelief that all our fathers were excluded (Eze 2:3)?

For some - Some of the Hebrews who came out of Egypt. The truth was that a large proportion of them rebelled against God, and provoked him to indignation. It is somewhat remarkable that though “all” the Hebrews seem to have joined in the provocation - except a very small number - Paul should have used language which would seem to imply that the number which rebelled was comparatively small. Another version, therefore, has been given to this passage by some of the most eminent critics, consisting merely in a change in the punctuation, by which a different view is given of the whole sentence. According to this, it would be a question, and would mean, “But who were they who when they had heard did provoke? Were they not all indeed who came out of Egypt under Moses? And with whom was He angry for 40 years? Was it not with those who sinned, whose carcasses fell in the wilderness?” This version was adopted by Chrysostom, Theodoret, and others of the Fathers; and is adopted by Rosenmuller, Clarke, Stuart, Pyle, and some others. In favor of it, it may be alleged: (1) That the Greek will bear it, all the change required being in the punctuation; (2) That it avoids the difficulty which exists in the other interpretation of supposing the apostle to imply that but few of them rebelled, when the truth was that it was nearly all; (3) It thus accords with the remainder of the exhortation, which consists in a series of questions; and, (4) It agrees with the scope and design of the whole. The object was not to state that it was not all who came out of Egypt that rebelled, or that the number was small, but that the great body of them rebelled and fell in the wilderness, and that Christians should be admonished by their example. […]