between *works *and works of worksin the Book of Numbers
Okay, that helps. In the English edition of Origen’s homilies that I’m looking at, there’s a footnote to Numbers 4:47. Let’s look at that verse.
In the DRV:
From thirty years old and upward, until fifty years old, that go into the ministry of the tabernacle, and to carry the burdens
In the RSV-CE:
*from thirty years old up to fifty years old, every one that could enter to do the work of service and the work of bearing burdens in the tent of meeting, *
In the NAB:
all between thirty and fifty years of age who were to undertake tasks of service or transport for the tent of meeting—
I’m assuming that “work of works” is equivalent to “ministry of the tabernacle” in the DRV, “work of service” in the RSV, and “tasks of service” in the NAB. (The DRV is different because it is based on the Latin Vulgate; whereas the other two are based on later Hebrew MSS.)
If we back up to the beginning of Numbers 4, it describes in detail two types of ministry: packing up the tabernacle, and carrying it away. These seem to correspond to the two jobs mentioned in verse 47.
From context, then, it seems that “work of works” refers to packing up the temple. If one job is to be considered as “more special” than the other, it might be the packing up, because there is closer contact with the ark and the sacred accoutrements, and because the work is not as burdensome. Thus, perhaps, “work of works.”
Another possibility: “work of works” means the job which is *more *burdensome.
In the end, I really don’t know where Origen gets the phrase. These are my best guesses based on the information you’ve provided.