The Idiom That Breaks
The Hebrew idiom is maṭṭēh leḥem (מַטֵּה לֶחֶם), the staff of bread.
Leviticus uses it in a curse: God will “break the staff of your bread.”1 Ezekiel uses the same image for siege and famine.2
The metaphor is concrete. A staff is what a body leans on. Bread is what a people leans on.
But the idiom often appears when that support is being broken. The first lesson is vulnerability, not comfort.
This makes the later proverb more complicated. “Bread is the staff of life” sounds like praise. The biblical formula often sounds like warning.
Bread supports life. Bread’s absence can also reveal how fragile that support is.
Related sections: Mercy East Of Eden; Support And Collapse.