661. Standing by the sea of glass, having the harps of God, signifies the Christian heaven in its boundaries, and the faith of charity with those who are there. Since "by the sea of glass" is signified a collection of those who have indeed some religion and worship, but not the good of life (n. 659). Therefore, by those who were seen "standing by that sea," is signified the Christian heaven in its boundaries, with whom there were religion, worship, and the good of life, because "they had the victory over the beast and over his image." The higher Christian heaven is treated of in the foregoing chapter; they who composed that heaven are meant by "the hundred forty-four thousand," who were seen standing with the Lamb on mount Zion (n. 612-625). By "harps" is signified the confession of the Lord from spiritual truths (n. 276, 616).
[2] Spiritual truths are of faith from charity. Their being seen to have harps, and heard to sing the song afterwards mentioned, was a representative of confession springing from the faith of charity. The affections of the thoughts and thence the sound of the discourse of the angels of heaven, are variously heard below in the spiritual world, either as the sound of waters, or of thunder, as above, chap. 14:2, or as the sound of trumpets, as above, chap. 4:1, or, as here, like the sound of harps, as also above, chap. 5:8; 14:2; but yet they are not waters which make the sound, nor thunders which thunder, nor trumpets and harps which sound, nor, indeed, are they songs; but the discourses of the angels and their confessions according to their affections and thence their thoughts, are thus heard below, from which the quality of their love and wisdom is perceived. That such things are heard is from the correspondence of affection with sound, and of thought with speech.