The Bible

Exodus 35:21

²¹ And they came, every one whose heart excited him, and every one whom his spirit made willing, and they brought the LORD'S offering to the work of the tabernacle of the congregation, and for all his service, and for the holy garments.

Commentary

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.