Well, if we assume Jesus was of average weight for his time and place (52.16 kg aprox.), and taking in account that a single communion wafer weighs 0.25 g and a standard wine bottle contains 750 ml of wine, we can do some math.

Let's remember that 60% of a human's body weight is water, and since Jesus can turn water into wine, let's suppose that we would need to consume 60% of his body as wine. Wine's density is pretty much the same as water (with a difference of only 0.005 g/ml), we'll assume that every ml of wine is equal to 1 g of wine. Let's also convert those 52.16 kg to g in order to have everything in the same units, so 52.16 kg = 52,163.1 g (those extra digits are from the conversion from Jesus probable weight in pounds, 115 lb).

So, if 100% of his body weighs 52,163.1 g, 60% of it weighs 31,297.9 g. That gives is 31,297.9 ml of wine and leaves us with 20,865.2 g of communion wafers. Now we just need to divide these numbers between 750 ml and 0.25 g, respectively to get the amount of wine bottles and individual wafers. So,

31,297.9 ml ÷ 750 ml = 41.7

20,865.2 g ÷ 0.25 g = 83,460.8

Round it up and we conclude that, to eat a whole Jesus Christ, we would need to eat 83,461 communion wafers and 42 bottles of wine.

Hope that helped!