Daniel 9:4

⁴ and I prayed unto Jehovah my God, and made my confession, and said, Alas Lord! the great and terrible ùGod, keeping covenant and loving-kindness with them that love him, and that keep his commandments:

Works, emeralds, purple broidered work, fine linen, coral, and agate

In Ezekiel 27:16, coral signifies knowledge of good. (Arcana Coelestia 1232)

Works, emeralds, purple broidered work, fine linen, coral, and agate, (Ezekiel 27:16), signify knowledges of good.