I see no such thing.
I see that God sent many prophets to mankind in ancient civilisations, to guide them when they were astray.
God never sent "Himself", and Jesus wasn't the first human "messiah" who was oppressed or killed.
Heb 1:1 In the past God spoke to our ancestors through the prophets at many times and in various ways, 2 but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe. 3 The Son is the radiance of God’s glory and the exact representation of his being, sustaining all things by his powerful word. After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven. 4 So he became as much superior to the angels as the name he has inherited is superior to theirs.
Heb 1:10 He also says,
“In the beginning, Lord, you laid the foundations of the earth,
and the heavens are the work of your hands.
11 They will perish, but you remain;
they will all wear out like a garment.
12 You will roll them up like a robe;
like a garment they will be changed.
But you remain the same,
and your years will never end.”
(a quote from Psalm 102:25-27 being applied to Jesus)
So now you can see that the New Testament teaches that through the Son all things have been created and therefore that Jesus cannot have been one of those things.
These verses also show that Jesus is pretty much equal to His Father and is not like any other prophet etc before Him and is in reality the only one who was sent from heaven.
But you are right, the Father did not send Himself, since the Father is not the Son.
I assume you refer to the philosophical preamble in "John".
That is the opinion of the anonymous author, and not reported to be Jesus' words.A Jew could never accept that any man could be God. Jesus as a Jew prayed to "the Father", meaning God.
It makes no sense that God would send 1000's of human prophets to warn mankind, and then send "Himself" appearing as a human.
Don't forget Paul also who taught that the uncreated Jesus was sent to become a man.
Don't forget the synoptic gospels who report Jesus parable of the bad tenants and how the owner of the vineyard sent His son to them, whom they mistreated and killed. (Matt 21:33-46, Mark 12:1-12, Luke 20:9-19)
But there are other places where the Bible teaches that Jesus was sent to become a man from His Father in heaven and other places in John's gospel apart from the preamble also.
If you don't believe it you don't believe it.