the dual nature of jesus
For Christianity, Jesus has a double nature God-man.
If you ask why, two answers are presented.
The first: God sent His only son as a man-lamb to be sacrificed for the sins of man.
The second: God became man to live like us and talk to us from our own level of existence, and transmit as a man the way to personal salvation.
So the first "reason" involves the idea of sacrifice to save man.
As you have read under the heading "sacrifice", sacrificing predates monotheism.
Sacrifice is never asked by the one God at the beginning from Abel and Cain, but has been present from the dawn of time in any religious ceremony.
Sacrifice plays an important part even in the first religions that are unanimously accepted to be superstition.
But sacrifice continues in monotheism, with Jesus being sacrificed by God, to obtain the atonement of human sins.
First, who atones the sins of man?
Does man atone his own sins? If not, who does?
If the "atoner" is God, then since when does the "atoner" sacrifice to the ones who need His atonement?
Let's suppose that the only God sacrifices the human body of another only God for the atonement of sins of man, in spite of human sacrifice being supposedly banned;
But to who?
Sacrifice is always to a higher being. In this case, even if we consider the impossible, that the sacrifice is to an equal being or to a lower being, then to who?
Is there a third party? Is there a law of nature created by God that makes sacrifice compulsory to get something? Is this law of nature higher than God?
If not, is God sacrificing His son for Himself, so that He "atones" the sins of man? Something like paying Himself to do something?
Second, with Jesus being the sacrificial lamb, the already "problematic" idea of sacrifice, human sacrifice, or God sacrificing Himself, or part of Himself, or His only son for man, gets turned upside down on so many levels.
Since Jesus does not remain dead in His body, then He cannot be considered as sacrificing His body. So what is sacrificed? The sacrifice will not remain a sacrifice.
Jesus is a "non-sacrificed" sacrifice.
Imagine the expression of God when the sacrifice of Abel had come back to life and had run back to the flock...
And third, why should God need to torture and sacrifice a human body to save man?
How can unleashing such violence on a human, cause salvation to the people unleashing that violence?
But who am I to know?
Now considering the second response,
If Jesus was God that had become man to be like us and live like us to convince us as a human, then why claim He is God as well?
Why does He need to show He is both?
He should either come as a man to convince us as a man, or come as the son of God (God Himself), in which case convincing would no longer be needed.
If He came to convince, which is admitted to be the reason He came for, then why does He expose Himself as being God and jeopardize His mission which was to convince as a man?
The reason for coming as a man will contradict the reason for coming as God, and the reason for coming as God will contradict the reason for coming as a man.
So what now?
"God works in mysterious ways?"