"God said to Abrahm, kill me a son..."
Any God that would save a man just because another man (a stranger)prayed for him, I want no part of. That is not a Judeo-Christian doctrine (although many Judeo-Christians still practice it), it's more akin to witchcraft or shamanism: perform the meaningless ritual, get the reward, quid pro quo. No morality or grace involved at all, just go through the motions.