Okay lets talk it..
First of all...animal sacrifice is is only for UNINTENTIONAL sins....there are a handfull of exceptions.
Blood sacrifice is NOT REQUIRED.
Lev 5:11 But if he be not able to bring two turtledoves, or two young pigeons, then he that sinned shall bring for his offering the tenth part of an ephah of fine flour for a sin offering; he shall put no oil upon it, neither shall he put any frankincense thereon: for it is a sin offering. 12Then shall he bring it to the priest, and the priest shall take his handful of it, even a memorial thereof, and burn it on the altar, according to the offerings made by fire unto the LORD: it is a sin offering.
The idea of blood ONLY is a Christian invention.
Furthermore, most of the meat in the sacrifice is eaten by the people. It is food for all. rich and poor alike. In some cases it is only for the priests.
“without the shedding of blood there is no forgiveness” (Hebrews 9:22) That is a misquotation of Lev 17:11....it doesnt say without shedding of blood there is no forgiveness.....it says dont EAT the blood because the life of the animal is in the blood.
Jesus Christ also did no wrong but willingly gave Himself to die for the sins of mankind (1 Timothy 2:6). Jesus Christ took our sin upon Himself and died in our place First, G-d forbids human sacrifice.....animals only!
Take heed to thyself that thou be not snared by following them, after that they be destroyed from before thee; and that thou inquire not after their gods, saying, How did these nations serve their gods? even so will I do likewise. Thou shalt not do so unto the Eternal thy God: for every abomination to the Eternal, which he hateth, have they done unto their gods; for even their sons and their daughters they have burnt in the fire to their gods. [Deuteronomy 12:30-31]
God tells us that Human sacrifice is so horrible a concept to Him, that it did not even come into His mind!
Because they have forsaken me, and have estranged this place, and have burned incense in it unto other gods, whom neither they nor their fathers have known, nor the kings of Judah, and have filled this place with the blood of innocents; They have built also the high places of Baal, to burn their sons with fire for burnt offerings unto Baal, which I commanded not, nor spake it, neither came it into my mind: Therefore, behold, the days come, saith the Eternal, that this place shall no more be called Tophet, nor The Valley of the Son of Hinnom, but The Valley of Slaughter. [Jeremiah 19:4-6]
Yea, they sacrificed their sons and their daughters unto devils, And shed innocent blood, even the blood of their sons and of their daughters, whom they sacrificed unto the idols of Canaan: and the land was polluted with blood. And shed innocent blood, even the blood of their sons and of their daughters, whom they sacrificed unto the idols of Canaan: and the land was polluted with blood. [Psalm 106:37-38]
Moreover thou hast taken thy sons and thy daughters, whom thou hast borne unto me, and these hast thou sacrificed unto them to be devoured. Is this of thy whoredoms a small matter? [Ezekiel 16:20]
And yet we are to then turn around and believe that God changed His mind, and required human sacrifice, and then it was the sacrifice of His own human son that God wanted? After telling the Jews to stay away from pagan practices, and pagan beliefs, God then changes His mind and says, "Okay, now go ahead and believe in a human sacrifice, just as these very pagans believe?"
God forbids one man dying for the sins of another (vicarious atonement)
In Deuteronomy 24:16 it specifically says this:
The fathers shall not be put to death for the children, neither shall the children be put to death for the father. Every man shall be put to death for his own sin.
The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him. But if the wicked will turn from all his sins that he hath committed, and keep all my statutes, and do that which is lawful and right, he shall surely live, he shall not die. All his transgressions that he hath committed, they shall not be mentioned unto him: in his righteousness that he hath done he shall live
And Jesus was not perfect! He lied to the High Priests...he said he didnt teach anything in secret but many times he told people to not tell anyone what he had told them. Jesus also violated the 5th commandment when he dishonored his mother....Woman, what do I have to do with you!...And my mother and brothers...who are my mother and brothers?? There are many more sins...but for the sake of time....
So, human sacrifices are forbidden, vicarious atonement is forbidden and Jesus was not sinless. Nor was he a kosher sacrifice....he suffocated on the cross, he should of had his throat cut and died of blood loss. Jesus blood was not sprinkled on the altar and his fat and innards burned on the altar and his meat wasnt eaten. He was not a sacrifice.
I think your assertions about God’s prohibitions against human sacrifice and extrapolating therefore that
GOD COULD NOT HAVE/WOULD NOT HAVE sacrificed
HIS ONLY BEGOTTEN SON
for our sins is a huge pile of assumptions.
IIRC, there are cases here and there in Scripture where God reserved for Himself the freedom to do some things that he forbade humans from doing.
Regardless, ALMIGHTY GOD IS STILL ALMIGHTY GOD. HE MAKES THE RULES AND IS ALSO ABOVE AND BEYOND THE RULES.