Hebrews 12:26

Whose voice then shook the earth:— It is generally granted by the spiritual commentators, that the person who spoke on earth, and he who spake from heaven, is the same great Messenger of the covenant; in which view the argument of the apostle is taken from the different manner of speaking: his speaking on earth being accompanied with earthly signs and circumstances; whereas his speaking from heaven means his coming down from heaven, appearing in the human nature, and declaring heavenly things, more glorious than the law. The speaking here mentioned, refers particularly to the alterations made in the constitution of religion, and to the new dispensation; and must be considered not as introductory to, but consequent upon the coming of the Messiah.