Jesus is NOT the Holy Spirit

We know Jesus is not the Holy Spirit because:

"Filled with the Holy Spirit, Jesus returned from the Jordan and was led by the Spirit into the desert"-Luke 4:1

If the Holy Spirit is Jesus, why does this verse mention the Spirit filled Him?  Did Jesus fill Himself?

And I will ask the Father, and he will give you another Advocate to be with you always, the Spirit of truth, which the world cannot accept, because it neither sees nor knows it. But you know it, because it remains with you, and will be in you.--John 14:16-17

 Why does Jesus speak of having the Father sending ANOTHER if Jesus IS the Holy Spirit?

Go, therefore, and make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit--Matthew 28:19

If Jesus IS the Holy Spirit, why does He mention It separately in such a way? As if the verse said, "baptizing them in the name of the Father, and of the Son, and of the Son."

I Jesus have sent my angel, to testify to you these things in the churches. I am the root and stock of David, the bright and morning star. And the Spirit and the bride say: Come. And he that heareth, let him say: Come. And he that thirsteth, let him come: and he that will, let him take the water of life, freely.-Revelation 22:16-17

IF Jesus is the Spirit, why does Jesus speak, then it goes on to say the Spirit speaks?