The Law in the Old Testament, with severe punishment for particularly egregious error, was meant to show Elohim’s hatred for sin, such as adultery and murder, using Israel as the example to the world that the wages of sin is death, at least spiritually for those not in the camp of the Israelites. Jesus Christ came to forgive such sins, so perhaps some of the murderers and adulterers before being stoned to death asked forgiveness from Elohim, like the thief on the cross who that day met Jesus in Paradise.
