Bible Verses About Miraculous Gifts of the Holy Spirit: Might be possessed without saving grace

Many will say to me in that day, Lord, lord, have we not in thy name prophesied? and in thy name cast out demons? and in thy name done many mighty things?

and then I will acknowledge to them, that--I never knew you, depart from me ye who are working lawlessness.

If with the tongues of men and of messengers I speak, and have not love, I have become brass sounding, or a cymbal tinkling;

and if I have prophecy, and know all the secrets, and all the knowledge, and if I have all the faith, so as to remove mountains, and have not love, I am nothing;