John 6:1-15 Gospel of John and the Role of Signs

Jesus went across the Sea of Galilee.
A large crowd followed him,
because they saw the signs he was performing on the sick.
Jesus went up on the mountain,
and there he sat down with his disciples.
The Jewish feast of Passover was near.
When Jesus raised his eyes
and saw that a large crowd was coming to him,
he said to Philip,
"Where can we buy enough food for them to eat?"
He said this to test him,
because he himself knew what he was going to do.
Philip answered him,
"Two hundred days?' wages worth of food would not be enough
for each of them to have a little.'"
One of his disciples,
Andrew, the brother of Simon Peter, said to him,
"There is a boy here who has five barley loaves and two fish;
but what good are these for so many?"
Jesus said, "Have the people recline."
Now there was a great deal of grass in that place.
So the men reclined, about five thousand in number.
Then Jesus took the loaves, gave thanks,
and distributed them to those who were reclining,
and also as much of the fish as they wanted.
When they had had their fill, he said to his disciples,
"Gather the fragments left over,
so that nothing will be wasted."
So they collected them,
and filled twelve wicker baskets with fragments
from the five barley loaves
that had been more than they could eat.
When the people saw the sign he had done, they said,
"This is truly the Prophet, the one who is to come into the world."
Since Jesus knew that they were going to come and carry him off
to make him king,
he withdrew again to the mountain alone.

In this passage we see the role of signs in the Gospel of John.  Signs, unlike in the synoptic gospels, are used to bring people to faith. They are signs that point to Jesus' relationship to God and illustrate the new relationship with the Kingdom of God. The symbolism of 5 fish and 2 loaves is that they add up to 7 which represents perfection. 7 represents perfection because it recalls the days of creation. The left over baskets which numbered 12 recall the 12 tribes of Israel. The symbolism here is that in the Kingdom of God, you will be nourished.