Joseph Benson's Commentary of the Old and New Testaments - Hebrews 12:20-21
Hebrews 12:20-21. For they could not endure that which was commanded That is, either, 1st, The law itself, so strict and holy, and promulged amidst such terrors seen and heard: or, 2d, The sense is, they could not bear to hear the following charge, or endure the terror which seized them when they heard those words proclaimed, And if even a beast touch the mountain, it shall be stoned, &c. And so terrible was the sight That manifestation of the divine presence, that even Moses ... read more
Albert Barnes' Notes on the Whole Bible - Hebrews 12:20
For they could not endure that which was commanded - They could not sustain the awe produced by the fact that God uttered his commands himself. The meaning is not that the commands themselves were intolerable, but that the manner in which they were communicated inspired a terror which they could not bear. They feared that they should die; Exodus 20:19.And if so much as a beast touch the mountain, it shall be stoned - Exodus 19:13. The prohibition was, that neither beast nor man should touch it... read more