Say
As with many common verbs, the meaning of “to say” in the Bible is highly dependent on context. Who is speaking? Who is hearing? What is it about? Is it a command, a message, an apology, instruction? All these things enter into the meaning of “say.” In general, though, “saying” has to do with sharing truth at various levels -- from the most exalted power people can have to perceive the Lord's desires directly to the most basic of orders issued to people at their lowest.
Bread
The word “bread” is used two ways in the Bible. In some cases it means actual bread; in others it stands for food in general. Food in the Bible represents everything good and true coming to use from the Lord. Of all foods, though, bread itself is perhaps the most basic and pure. As such it represents the most central of all desires for good: the love of the Lord Himself.