Wine can symbolize many things. The first glass of wine symbolizes hope. When Moses started to plead for freedom, the reality of possibly being free became believable. This first glass of wine symbolizes the hope that this Seder will be over and we can eat food. Had we not had this vary sip of the wine, the reality that this Seder will end, would have seemed like a dream far out of reach. Had Moses not plead for freedom, it would have seemed impossible. 


haggadah Section: Kadesh
Source: Orginial