Christianity teaches that Mankind’s ancestors angered the Jews’ God by seeking knowledge of right and wrong.

This God became so furious, he condemned Man to a life of misery and suffering on Earth followed by the end of Man’s existence. Its teaching further suggests that the ritual human sacrifice of a “savior” of humanity to this spectator God will appease the divine anger provoked by Man’s “insolent” search for morality and his other “sins” of disobedience, but that this God, having savored the pleasures of watching Jesus’ agonizing torture and death, will be pleased enough to restore eternal life to all who henceforth obey him without any question. 

This ideology is a resurection of a basic tenet of Judaism: an intolerant, vengeful god can be placated by shedding the blood of innocent animals, including “subhuman” goiims (non-Jews).

Spelled out in different words to hide its substance from consciousness (satisfaction, ransom, penal rhetoric “explaining atonement”), this is the subliminal message taught in Christian Churches and Sunday schools.
Christianity is teaching us that Jesus had to be sacrificed so he could save Mankind by wiping away humanity’s sins with his blood.