'Holy Spirit' in the Bible

And I knew him not: but he that sent me to baptize with water, the same said to me, Upon whom thou shalt see the Spirit descending and remaining on him, the same is he who baptizeth with the Holy Spirit.

(But this he spoke of the Spirit, which they that believe on him should receive, for the Holy Spirit was not yet given, because that Jesus was not yet glorified.)

But the Comforter, who is the Holy Spirit, whom the Father will send in my name, he will teach you all things, and bring all things to your remembrance, whatever I have said to you.

And when he had said this, he breathed on them, and saith to them, Receive ye the Holy Spirit.