'Holy Spirit' in the Bible

I indeed have baptised you with water, but he shall baptise you with the Holy Spirit.

but whosoever shall speak injuriously against the Holy Spirit, to eternity has no forgiveness; but lies under the guilt of an everlasting sin;

for David himself said speaking in the Holy Spirit, The Lord said to my Lord, Sit on my right hand until I put thine enemies as footstool of thy feet.

But when they shall lead you away to deliver you up, be not careful beforehand as to what ye shall say, nor prepare your discourse: but whatsoever shall be given you in that hour, that speak; for ye are not the speakers, but the Holy Spirit.