“The twelve cast out
Many sick people
They cured them.”
καὶ δαιμόνια πολλὰ ἐξέβαλλον, καὶ ἤλειφον ἐλαίῳ πολλοὺς ἀρρώστους καὶ ἐθεράπευον.
There is something similar in Luke, chapter 9:6. These 12 apostles carried out the dual functions of casting out demons and healing people. Mark always put a lot of emphasis on casting out many demons (καὶ δαιμόνια πολλὰ ἐξέβαλλον). But they also anointed many sick with oil (καὶ ἤλειφον ἐλαίῳ πολλοὺς ἀρρώστους) that cured them (καὶ ἐθεράπευον). Oil was considered a basic healing element in the ancient world.