John Wesley on Deuteronomy 5:22

Out of the midst of the fire, of the cloud, and of the thick darkness - That was a dispensation of terror, designed to make the gospel of grace the more welcome, and to be a specimen of the terrors of the judgment - day. He added no more - He ceased for that time to speak immediately, and with that loud voice unto the people; for the rest were delivered to Moses, and by him communicated unto them. This he did to shew the preeminence of that law above the rest, and its everlasting obligation.