No, a third class condition is usually introduced by some form of AN such
as EAN.
I would say that ALLA EI TIS AGAQOS PROS OIKODOMHN THS CREIAS is an
adversative clause indicating the converse of the SAPROS LOGOS. I would
translate it "but if any (word) (is) good for meeting the need."
Carlton L. Winbery
Prof. Religion
LA College, Pineville, La
winberyc@popalex1.linknet.net
winbery@andria.lacollege.edu