When Jesus came back before Pentecost, was he God?

[SeekingOne]

I ask this, because if Jesus was God, then why did He need to leave so that the "comforter" could come? Like "hey bro., I need to leave so I can come back" kind of thing?

John 16:7
7 Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.

Edit:
Okay, I think I am tired, someone asked me this, I posted it, and then I am thinking "wait, He said this before He died!" LOL