And thy meat which thou shalt eat shall be by weight, twenty shekels a day: from time to time shalt thou eat it.
Thy meat shall be by weight twenty shekels ie little more than ten ounces A scant measure to Thy meat ... shall be by weight, twenty shekels - i:e., little more than ten ounces. A scant measure to sustain life (Jeremiah 52:6). But it applies not only to the siege, but to their whole subsequent state.