Deuteronomy 33:2-3. The trumpet perhaps was by the ministry of angels. Revelation 8:6. Hence the law is spoken of as given by the disposition of angels. Acts 7:53.
Related Commentaries of Exodus 19:13
Exodus 19:13
13 There shall not an hand touch it, but he shall surely be stoned, or shot through; whether it be beast or man, it shall not live: when the trumpeta soundeth long, they shall come up to the mount.