Ezekiel 45:13

This is the oblation that ye shall offer
Not at the dedication of the temple, to be built in time to come, as Kimchi thinks; nor for the daily sacrifices, as others; but for the maintenance of the priests, that is, the ministers of the Gospel; for here begin the rules for the right ordering of ecclesiastical affairs of those times: the sixth part of an ephah of an homer of wheat, and ye shall give the
sixth part of an ephah of an homer of barley:
this confirms that an "ephah" was for dry measure, of wheat and barley; and as it was the tenth part of an homer, a sixtieth part of an homer of wheat and barley was to be given for this service; that is, if a man had an homer of wheat or of barley, he was to give a sixtieth part of it for the use of the ministers of the Lord: the meaning is, that the people should give freely and liberally, according to their substance, for their support and maintenance,