Said to one another (elaloun pro allhlou). Imperfect tense, inchoative, "began to speak," each to the other. It suggests also repetition, they kept saying, Now (dh). A particle of urgency. This thing (to rhma touto). A Hebraistic and vernacular use of rhma (something said) as something done. See on "Lu 1:65". The ancient Greek used logo in this same way.