“(For they could not endure that which was commanded, And if so much as a beast touch the mountain, it shall be stoned, or thrust through with a dart:”
King James Version (KJV)
12:20 For they could not bear - The terror which seized them, when they heard those words proclaimed, If even a beast, &c. #Exod 19:12|, &c.
Heb 12:20 For they could not endure that which was commanded. The command and penalty added to their terror (Ex 19:12).