'Holy Spirit' in the Bible

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

(But this spoke he of the Spirit, whom 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 shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.

And when he had said this, he breathed on them, and said unto them, Receive you the Holy Spirit: