Taking his way through the Water Gate, on the west side of the Temple, he entered the Inner Court. Then he mounted the twelve steps leading to the vestibule of the Temple proper. Two priests, who had just come out of the chamber where the implements for sacrificing were kept, bowed low to him and passed out into the Inner Court. Isaiah was evidently so absorbed in his thoughts that he did not notice them, for he did not return their salute, but walked forward to the entrance of the Hekal, or Temple proper.
There he stood for a moment in silence; then he leaned wearily against one of the entrance pillars. Behind him the Priests' Hall and the Inner Court were deserted. Before him, in the Hekal, was the Altar of Incense, on which coals from the recent sacrifices were still alive. To the right of the Altar was the Menorah, the seven-light candlestick, and to the left the table of showbread. Behind these hung the golden curtains that separated the Holy of Holies from the rest of the Temple.
A thin line of blue and purple smoke rose from the live coals on the Incense Altar and wound its way upward to the ceiling of the Hekal. As Isaiah watched the rising smoke, it became thicker and thicker, and filled the whole Temple. His eyes gazed from the Altar to the glittering gold curtains behind it. The reflection from the coals, and the playing of the blue and purple smoke on the golden sheets, caused them to sheen and shimmer until they faded entirely away into the blue and purple maze that filled the Hekal.
Isaiah was gazing right into the Holy of Holies, where no human eyes, except those of the High Priest, once a year, ever looked, and behold! he saw a most remarkable vision.
There, instead of the wooden Ark of the Covenant, he beheld a great and lofty throne on which was God, Himself. Instead of the two Cherubim of wood and gold, that surmounted the Ark, he beheld Seraphim, the fiery Angels, standing attendant before Him. Each of the Seraphim had six wings, with two he covered his face, with two he covered his feet and with two he flew. And one cried unto another and said:
"Holy, holy, holy, is the Lord of hosts,
The whole earth is full of His glory."
Isaiah felt the very foundations of the threshold shake under him, at the sound of the calling. Covering his face with both hands, he cried out:
"Woe is me!
I am undone.
For I am a man of unclean lips.
And I am dwelling among a people of unclean lips;
Yet mine eyes have seen the King, the God of hosts."
Uncovering his face, he stretched out his hands towards the throne in mute appeal. Thereupon one of the Seraphim flew to the Altar and, with a pair of tongs, took from it a live coal. From the Altar the Seraph flew directly to Isaiah and, touching his mouth with the live coal, said:
"See, this has touched thy lips,
Therefore thine iniquity is gone
And thy sin forgiven."