Jews considered these animals dirty, and God told the Jews not to eat them. They are metaphors for wicked people who do not value holy things. It would be best to translate these words literally. (See: [[rc://en/ta/man/translate/figs-metaphor]])
These are similar to round, valuable stones or beads. They are a metaphor for the knowledge of God or precious things in general. (See: [[rc://en/ta/man/translate/figs-metaphor]])