Mark 3:15

15 and to have authority to cast out the 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 summoned those whom He Himself wanted, and they came to Him.
14 And He appointed twelve, so that they would be with Him and that He could send them out to preach,
15 and to have authority to cast out the demons.
16 And He appointed the twelve: Simon (to whom He gave the name Peter ),
17 and James, the son of Zebedee, and John the brother of James (to them He gave the name Boanerges, which means, "Sons of Thunder ");
New American Standard Bible Copyright © 1960, 1962, 1968, 1971, 1972, 1973, 1975, 1977, 1995 by The Lockman Foundation, La Habra, California.  All rights reserved.