of the bread asked for in the Lord's Prayer: the portion for the coming day, the bread needed to live on right now
This word occurs only twice in the Bible, both times describing the bread in the Lord's Prayer ("give us this day our ____ bread"), and nowhere else in all of surviving Greek. Origen already noticed this around the year 233 and concluded the Gospel writers had coined it. Modern study confirms his verdict: the one supposed parallel, a household account from Egypt, turned out on fresh inspection to read "of oil," not this word at all. So we cannot look up how anyone else used it. We can only reason from how it is built and from the prayer it sits in.
The most widely held view today is that it was formed from the everyday phrase for "the coming day" (the same idiom Luke uses for "the next day" in Acts), so the petition asks for the bread of the day now arriving. A morning prayer would mean the day just dawning; an evening prayer, tomorrow. Either way it points to the very next portion a person needs, not a stockpile. This fits the manna story, where Israel could gather only one day's food at a time, and Agur's prayer for "my allotted bread, neither poverty nor riches."
Because the word is a coinage with no outside use, its exact force has been debated for nineteen centuries, and several careful readings remain alive:
- bread for tomorrow understood as the bread of the coming age
- bread simply needed to survive
- the bread that is Christ himself received at the table
Those readings are laid out under the entry's disputes. What nearly all of them share is a request for dependence on God for the next stretch of life, one day at a time.
Both uses sit in the same petition, so the word carries one sense; the disagreement is about what that single sense most precisely means, not about two different uses in two different contexts.