Verses about 'demonstrating gods power'
Exodus 33:21
And the Lord said, Behold, there is a place by me, and thou shalt stand upon a rock.
Psalms 24:8
Who is this King of glory? The Lord strong and mighty, the Lord mighty in battle.
Mark 16:17
And these signs shall follow them that believe; In my name shall they cast out devils.
Mark 9:25
And Jesus rebuked the unclean spirit, saying unto him, Thou dumb and deaf spirit, I charge thee, come out of him.