For necessary uses (εἰς τὰς ἀναγκαίας χρείας)
The phrase N.T.o. With reference to whatever occasion may demand them.
Unfruitful (ἄκαρποι)
Only here in Pastorals. In Paul, 1Co 14:14; Eph 5:11. Not only in supplying the needs, but in cultivating Christian graces in themselves by acts of Christian service.