And you shall set bounds unto the people round about, saying, Take heed to yourselves, that you go not up into the mount, or touch the border of it: whosoever touches the mount shall be surely put to death:
Read Chapter 19
Augustine of Hippo
AD 430
In this wonderful agreement there is the very great difference, that in the Old Testament the people is held back by a fearful dread from approaching the place where the law was given; whereas in the New the Holy Spirit comes upon those who were assembled together waiting for his promised coming.