First of all back up and see it says God "sent" his son. You can "send" yourself you only send others.
Also notice what Jesus said about being "one" woth God.
"11 “I am no longer in the world, but they are in the world, and I am coming to you. Holy Father, watch over them on account of your own name, which you have given me, so that they may be one just as we are one."
Notice Jesus said his desciples would be one in the same manner that he and God are one. Are we all the same person? Jesus surely wasn't saying we were all part of one organism, but he was saying we would be one in thought, and belief. So him and God are one just as we are one.