"Brine" is a symbol of the true spiritual Bread - the Word of God's Will, His Commandments, not perverted by false interpretations, interpretations, speculations, not having extraneous "Impurities" of lies, "Leaven" of false teachings.
"Definite" is the Symbol of the Will of God, conveyed to the nations in the Word of Holy Scripture by the Patriarchs, Prophets, Christ, Apostles and all the Righteous.