Thematic Bible: Darkness, &c at giving of, illustrative of obscurity of mosaic dispensation

For ye have not come to a mountain being felt, and which burned with fire, and to darkness, and gloom, and a tempest, and a sound of a trumpet, and a voice of words, of which those who heard begged that a word not be added to them. For they did not bear that which was commanded, if even a beast should touch the mountain, it shall be stoned. read more.
And so fearful was that which was made visible, that Moses said, I am terrified and trembling. But ye have come to mount Zion, and to the city of a living God, a heavenly Jerusalem, and to myriads of heavenly agents, to a festal gathering and assembly of firstborn sons who were enrolled in the heavens, and to God, a Judge of all, and to spirits of righteous men who were made fully perfect, and to Jesus a mediator of a new covenant, and to blood of sprinkling that speaks better than Abel.