Measure Hebrew is a term used to describe the ancient system of measurement used in the Hebrew Bible. The two words that make up this term are Omer and Ephah, both of which are four and five letter words respectively. Omer is a unit of dry measure equal to one tenth of an ephah, which is a unit of dry measure equal to about three pecks or 22 liters. Together, these two words represent the ancient system of measurement used in the Hebrew Bible.