Isaiah 6:4 - Ellicott's Commentary On The Whole Bible

Bible Comments

The posts of the door. — Better, the foundations of the threshold. The words seem to point to the prophet’s position as in front of the Holy of holies.

The house was filled with smoke. — The vision had its prototype in “the smoke as of a furnace” on Sinai (Exodus 19:18), in the glory-cloud of 1 Kings 8:10, and possibly in its lurid fire-lit darkness represented the wrath of Jehovah, as the clear brightness of the throne did His love. So in Revelation 15:8, the “smoke from the glory of God” precedes the outpouring of the seven vials of wrath’. The parallelism of the clouds of incense-smoke as the symbol of adoring prayer (Revelation 5:8; Revelation 8:4) suggests an alternative interpretation as possible; but in that case mention would probably have been made of the censers from which it rose. The incense-clouds of the Temple may in either case have been the starting-point of the mystic vision.

Isaiah 6:4

4 And the posts of the doora moved at the voice of him that cried, and the house was filled with smoke.