Bible is useful to gain some insight but it's like finding a needle of truth in a haystack of lies. Christianity and the bible was born after he was crucified. Jesus died a jew.
Did you read genesis homie? God was furious when Abraham was trying to sacrifice his son Isaac to prove his loyalty. God said; do not sacrifice my children! Sacrifice this goat instead! We are human afterall, we crave bloodshed. It's the Satanist' that mirror Christianity and do the opposite; sacrifice humans, worship the goat; what is up is down, left is right etc
Jesus did not sacrifice himself, he was ambushed and betrayed.