'Bread' in the Bible

wherefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.

The cup of blessing which we bless, is it not a communion of the blood of Christ? The bread which we break, is it not a communion of the body of Christ?

seeing that we, who are many, are one bread, one body: for we are all partake of the one bread.

For I received of the Lord that which also I delivered unto you, that the Lord Jesus in the night in which he was betrayed took bread;

For as often as ye eat this bread, and drink the cup, ye proclaim the Lord's death till he come.

Wherefore whosoever shall eat the bread or drink the cup of the Lord in an unworthy manner, shall be guilty of the body and the blood of the Lord.

But let a man prove himself, and so let him eat of the bread, and drink of the cup.