Mark 3:15

15 and have authority to cast out demons:

Mark 3:15 Meaning and Commentary

Mark 3:15

And to have power to heal sicknesses
All manner of corporeal diseases that attend men and women:

and to cast out devils;
from such who were possessed with them: that is, he chose and appointed them to be his apostles, with a view of conferring such powers upon them hereafter; for as yet, they were not vested with them, nor sent out to exercise them; no, not till near twelve months after.

Mark 3:15 In-Context

13 And he went up on the mountain, and called to him those whom he desired; and they came to him.

14 And he appointed twelve, to be with him, and to be sent out to preach

15 and have authority to cast out demons:

16 Simon whom he surnamed Peter;

17 James the son of Zeb'edee and John the brother of James, whom he surnamed Bo-aner'ges, that is, sons of thunder;