Questions about the Word, the Church and the Ordinances
135. Q. What does the wine [of the Lord’s Supper] represent?
A. The bread represents the blood of Jesus, shed for our salvation.
(Click through to read scriptural proofs.)
And he took a cup, and when hehad given thanks he gave it to them, saying, “Drink of it, all of you, for this is my blood of the covenant, which is poured out for many for the forgiveness of sins.
In the same way also he took the cup, after supper, saying,“This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.”
Taken from A Catechism for Girls and Boys found here.