443. And I heard a voice from the four horns of the golden altar which is before God (verse 14), saying to the sixth angel which had the trumpet, signifies a command from the Lord out of the spiritual heaven to those who were to explore and make manifest. By "a voice" is signified a Divine command; by "the golden altar," or altar of incense, is signified the spiritual heaven (n. 277, 392); by "the four horns" of that altar is signified its power (n. 270); here, the power of loosing the four angels bound at the river Euphrates, as follows: by "the sixth angel" who had the trumpet, is signified to those to whom the office of exploring and making manifest these things was enjoined (n. 442).