"The prayer for bread in this petition should be allowed to remain, first of all, a prayer for bread. At times in the church's exposition this bread has been turned into spiritual bread...It is possible to be more spiritual than God. Why would Jesus who fed his five thousand not want us to pray for the feeding of our six billion? And while Jesus says that man does not live by bread alone, he is too realistic to say that man does not live by bread at all."
Frederick Dale Bruner
Matthew: A Commentary, Volume 1: The Christbook, Matthew 1-12