"...dia with the genitive is used of the manner of acting. The means
whereby a thing is done is already in a certain sense a manner in which it
is done, e.g. DIA LOGOU <<orally>> Acts 15,27 as opposed to DIA TNS
EPISTOLNS 2 Cor 10,11. From this starting point the use is extended to
manners which are not means but mere circumstances: EGRAPHA UMIN DIA
POLLWN DAXRUWN 2 Cor 2,4 (cf. Rom 4,11; 14,20; 2 Cor 3,11; 6,8), even a
circumstance which hinders the action, so that one might almost render <<in
spite of>>: HO DIA GRAMMATOS KAI PERITOMNS PARABATNS Rom 2,27. -- Some
derive this usage rather from the notion of a circumstance through which
one passes and so, in which one acts: we walk DIA PISTEWS OU DIA EIDOUS 2
Cor 5,7."
--- May God's blessing be in all your relationships. [Adapted from Lakota]