1 Peter 2 King James Version (KJV)
2 As newborn babes, desire the sincere milk of the word, that ye may grow thereby:
3 If so be ye have tasted that the Lord is gracious.
4 To whom coming (Holy Spirit), as unto a living stone, disallowed indeed of men, but "CHOSEN" of God, and precious,
5 Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to "offer up spiritual sacrifices", ACCEPTABLE to God BY Jesus Christ. (this is where Jesus confess us TO His Father!) Yes! Jesus, is the "first fruits" To His Father! What the Father doesn't have, but, "wants and hopes for" is YOUR "first fruits!" (much akin to the O.T. offerings up of the Nation of Israel's first fruits (INDIVIDUALLY), by Jehovah's Priests)
In answering the OP? I wouldn't use the word "demons", should you be a "Christian." Unless, you are "exorcising" one from a "non-believer." In which case, there were even "some demons", even the "Disciples of Christ" COULDN'T "cast out", or "exorcise", I guess is the word used for "casting out" these days.
That being said, should you have said, "evil spirits", blueluna5? Abso-Friggin'-LUTELY! For this is a WAR we wage against satan! As, it is also waged against us!
As Paul, and so many other writers in the N.T. "Acknowledge" this "Chain of Command", usually in their introduction, of their "letter, or epistle." Or, not to far into their "written record."
Milky's "discipling" Milky's = More Milky's! Sadly, this is the state of today's churches, and (alleged) higher schools of "learning", are producing these days.
One could, "liken" one, having believed and accepted Jesus Christ as one's Lord and Savior (HIGH PRIEST, AND "KINSMEN" REDEEMER), to the "angels" of the Lord of the Harvest, having "weeded out" the tares, to the point where one is even able TO "believe!" But, there are still many tares that the further "weeding out" would damage the "convert." Just as soon, as one confesses Jesus to men? One is INSTANTLY confessed to Jesus' Father! If one would "consider" this as the "Lord of the Harvest?" And "allow" HIM (Lord of the Harvest), to "work" one? (and don't think the Holy Spirit, doesn't have it's "role" to play in this) One would be the so MUCH better off, CONTENDING for the faith, as opposed to DEFENDING "only?" It'll make your head spin!