"At harvesttime,portions were to be left for the needy.It also ensured that they did not subsist on demoralizing handouts that required no effort on their part.In turn,gleaners could domomstrate their own thankfulness to Jehovah for this provision by contributing a tenth of their gleanings at his place of worship."
So does the GB of the WBTS contribute their share of cleaning their rooms,cleaning their toilets,washing their clothes to show their thankfulness for the generous giving spirit of the Brothers & Sisters.To ensure that they (GB) do not subsist on demoralizing handouts and require no effort on their part.
Bob