Holy books have been re-written over and over again and it's very possible the writers slipped in their own prejudices, that accumulated over centuries.
Even if that's true, we should take them for what they are - the versions people cling to today, not what they "should have been". The ancient versions that no longer exist and nobody believes in are irrelevant today.
The point of Christianity was "be good to others and you will be rewarded when you die", and religion is so strong i wouldn't be surprised if people hundreds of years ago warped and used it as a controlling tool.
Based on what do you say that is the whole point of Christianity? If the original versions had been lost, how can you say what the original versions meant to say?
Christianity is based on a book with hundreds of pages, many of which up and down are filled with barbaric moral commandments. Many of the commandments in it contradict other parts, and I'm not just speaking Old-New Testament, the NT has its bad sides too.
In any case the Bible that christians believe in today which has actual relevance to the world and actually affects it IS a controlling tool - it contains morbid ideas telling people to kill innocent people.
Point is take the scripts with a grain of salt and not as a solid resource for either side of the argument, they're probably like a written version of chinese whispers
They're not a solid source of anything. Neither morals nor truth. That is why it is extremely dangerous when people take them seriously and think they are.