A third of an ephah — the measure of flour in the parable of the leaven.
Volume (dry)
6.67–8 L (1.76–2.11 gal).
Defined as 1/3 of a ephah.
Inherits the disagreement over the ephah.
A seah is a third of an ephah, and it is the household baking measure: Abraham tells Sarah to take three seahs of fine flour for the visitors, and the woman in the parable hides leaven in the same three. Three seahs is an ephah, so both scenes are describing a full measure rather than a modest one — enough bread for a crowd.
Each basket holds its measure at the middle of the range above. The ephah is the anchor: a seah is a third of it, an omer a tenth and a cab an eighteenth, and ten ephahs make a homer, the word for a donkey’s load. An omer of manna, a day’s food for one person (Exodus 16:16), is about a 2-litre bottle’s worth.