"The bush" (thorns) is a symbol of all the Righteous who lived in the days from Abel to Moses and were "kindled," encouraged by the knowledge and fulfillment of the inexhaustible "Fire" of the Word of God's Will.

(According to one translation, the etymology of this word is "bush," the Russian equivalent being "foundation," "foundation," as well as "generation," "era.")

Negative meaning.

 "Thorn bush," as the opposite of such noble trees as cedar, olive, vine, etc.  In this meaning, "thorn bush" symbolizes the sinful peoples of the world who are constantly burning with the fire of sin, committing iniquities.