John Calvin's Commentary on the Bible - Hebrews 8:8
Verse 8 8.Behold, the days come, etc. (Jeremiah 31:31.) The Prophet speaks of future time; he arraigns the people of perfidy, because they continued not faithful after having received the Law. The Law, then, was the covenant which was broken, as God complains, by the people. To remedy this evil, he promised a new and a different covenant, the fulfillment of which prophecy was the abrogation of the old covenant. But it may be said, the Apostle seems unreasonably to turn this prophecy to suit... read more
John Calvin's Commentary on the Bible - Hebrews 8:7
Verse 7 7.For if that first, etc. He confirms what he had said of the excellency of the covenant which God has made with us through Christ; and he confirms it on this ground, because the covenant of the Law was neither valid nor permanent; for if nothing was wanting in it, why was another substituted for it? But another has been substituted; and from this it is evident that the old covenant was not in every respect perfect. To prove this he adduces the testimony of Jeremiah, which we shall... read more