Hebrews 3:17

Verse 17. But with whom was he grieved forty years?] I believe it was Surenhusius who first observed that "the apostle, in using the term forty years, elegantly alludes to the space of time which had elapsed since the ascension of our Lord till the time in which this epistle was written, which was about forty years." But this does not exactly agree with what appears to be the exact date of this epistle. However, God had now been a long time provoked by that race rejecting the manifested Messiah, as he was by the conduct of their forefathers in the wilderness; and as that provocation was punished by a very signal judgment, so they might expect this to be punished also. The analogy was perfect in the crimes, and it might reasonably be expected to be so in the punishment. And was not the destruction of Jerusalem a proof of the heinous nature of their crimes, and of the justice of God's outpoured wrath?

Whose carcasses fell] ων τα κωλα επεσεν. Whose members fell; for τακωλα properly signifies the members of the body, and here may be an allusion to the scattered, bleached bones of this people, that were a long time apparent in the wilderness, continuing there as a proof of their crimes, and of the judgments of God.