'Holy Spirit' in the Bible

Now the birth of Jesus Christ was in this manner: When his mother Mary was espoused to Joseph, before they came together, she was found with child by the Holy Spirit.

But while he thought on these things, the angel of the Lord appeared to him in a dream, saying, Joseph, thou son of David, fear not to take to thee Mary thy wife: for that which is conceived in her is by the Holy Spirit.

I indeed baptize you with water to repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Spirit, and with fire:

Wherefore I say to you, All manner of sin and blasphemy shall be forgiven to men: but the blasphemy against the Holy Spirit shall not be forgiven to men.

And whoever speaketh a word against the Son of man, it shall be forgiven him: but whoever speaketh against the Holy Spirit, it shall not be forgiven him, neither in this world, neither in the world to come.

Go ye therefore and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit.