KJV:
And all the people saw the thunderings, and the lightnings, and the noise of the trumpet, and the mountain smoking: and when the people saw it, they removed, and stood afar off.
NASB:
All the people perceived the thunder and the lightning flashes and the sound of the trumpet and the mountain smoking; and when the people saw it, they trembled and stood at a distance.
KJV:
And say unto him, Take heed, and be quiet; fear not, neither be fainthearted for the two tails of these smoking firebrands, for the fierce anger of Rezin with Syria, and of the son of Remaliah.
NASB:
and say to him, 'Take care and be calm, have no fear and do not be fainthearted because of these two stubs of smoldering firebrands, on account of the fierce anger of Rezin and Aram and the son of Remaliah.