'To rend the garments' signifies mourning for truth lost or destroyed, or the loss of faith.

'Rending the garments' can also signify zeal for doctrine and truth, and humility.

(Odkazy: Arcana Coelestia 4763, Genesis 37:29, 37:34)

Fire, in the spiritual sense, can mean either love or hatred depending on the context, just as natural fire can be either comforting in keeping you warm, or scary in burning down your house. Our language reflects this, too -- we use concepts like a smoldering hatred or a burning love. So fire signifies a love, either a good love of the neighbor and to the Lord, or, in a bad sense, selfish love of oneself that, if unchecked by conscience, leads to hatred of anyone that opposes it.