 Rava also inferred from the comparison in of Torah to both rain and dew that Torah can affect a worthy scholar as beneficially as dew, and an unworthy one like a crushing rainstorm.Rabbi Abbahu cited to support the proposition of  that three who have eaten together publicly should say the Grace after Meals (, "Birkat Hamazon") together as well.In Moses says, "When I (who am one) proclaim the name of the Lord, you (in the plural, who are thus at least two more) ascribe greatness to our God."