“ἐξ ἐμοῦ ”  The reading in St. Luke (viii. 46) is ἀπ᾽ ἐμοῦ.  In the parallel passage, Mark v. 30, the words are, “Jesus knowing in himself that virtue had gone out of him,” ἐξ αὐτοῦ which D. inserts in Luke viii. 45.