Counting of the Omer is a verbal counting of each of the forty-nine days betweenthe holidays of Passover and Shavuot. This practice derives from the Torah commandment to count forty-nine days beginning the from the day on which the Omer, a sacrifice containing an omer-measure of barley, was offered in the Temple in Jerusalem, up until the day before an offering of wheat was brought to the Temple on Shavuot. The Counting of the Omer begins on the second day of Passover, and ends the day before the holiday of Shavuot, the ‘fiftieth day.’
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