Good friends, go in, and taste some wine with me;
I think the idea of "taste some wine with me" is a symbol a little for the death that may await caeser. He starts to expect to be dying and when he offers wine it may seem such as a last offering. It may symbolize the idea of a last goodbye or blood especially in the catholic belief comparing to Jesus in a sense where he offered the cup of wine and turned it into blood during the "Last supper" where this may be kind of the same idea