Leviticus 23:10

When ye be come into the land. — This is the third of the four instances in Leviticus where a law is given prospectively, having no immediate bearing on the condition of the people of Israel. (See Leviticus 19:23.)

Then ye shall bring a sheaf of the first-fruits of your harvest. — Better, ye shall bring the first-fruit omer of your harvest. The omer had to be from the best and ripest standing corn of a field near Jerusalem. The measure of an omer was of the meal obtained from the barley offering. Hence three seahs = one ephah, or ten omers, were at first gathered in the following manner : — “Delegates from the Sanhedrim went into the field nearest to Jerusalem a day before the festival, and tied together the ears in bundles whilst still fastened to the ground.”