When asked why, Jesus made several mysterious responses, among them, "No one puts new wine into old wineskins: otherwise, the wine will burst the skins, and the wine is lost, and so are the skins: but one puts new wine into fresh wineskins" (Mark 2:22
We have to have new wines skins to carry his annointing! 
 
Meanings
Cross- We have to be renewed
Grapes- New Wine