At some point people really feared Yahweh, but we of the modern world are accustomed to calling him "the good god" although he kills, maims, and curse people at will when he feels that they don't worship him as he wants to be worshiped. If someone behaved like that in real life we would call him a sociopath which may be the reason why he split up into several fractions of a supreme god called The Trinity: 1) God, The Father, 2) Jesus, The Son, and 3) The Holy Spirit. Had Yahweh descended among the humans who believed in and worshiped him, they may have let go of all beliefs in the supreme god as "good" because he was never what we see as "good". The son, Jesus, on the other hand, has been presented to us as super-good, forgiving and benevolent. He even was so good and loved people so dearly that he sacrificed himself to save us, sinful humans. However, being part of The Trinity, what he does is to sacrifice himself to himself, which simply is very weird.
One might say that something like sacrifices always are quite strange, and this on at least holds one above the sacrifice of e.g. a slave, and animal, or whatever. That's something I don't see as a sacrifice at all: Heroes who save other people by fighting what needs to be fought to do so are sacrificing their health, belongings or even life, which is a genuine sacrifice. To grab some hapless creature - human or not - and cut his or her throat doesn't count as a sacrifice, it's blatant murder!
When it comes to sacrifices in a Christian context, it's weird. Why would the presumed son of Yahweh let himself be killed to please his so-called heavenly father? How would that please him, and what sins are his "blood washing away" as the saying goes? Many/Most Christians believe that it's their individual sins that's being targeted, but no, it's the so-called "Original Sin" of Adam and Eve which in my opinion is a very far-fetched notion as it moves an assumed real, historically genuine sacrifice into the world of the myths and legends.
https://www.faithward.org/why-did-jesus-have-to-die-for-us/
Wikipedia