ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
fissum: i, n., v. findo.
fissum,¹⁶ ī, n. (fissus), fente, crevasse : Cels. Med. 5, 20, 5