According to Christianity, there is only one god, he is perfect, and bible morality is absolute. In fact, it is literally carved in stone. The problem with this is that we have one god setting out laws in the Old Testament for one group of people in one time, yet the same god setting out a different set of laws in the New Testament for a different people in a different time.
Which is true and correct ? It seems gods laws are relative, and change with the times.
God says "thou shalt not kill", yet he sets out to kill men, women, children, unborn babies, and even animals. Also, he commands us to kill our family if they worship other gods. Well, ? What is it ? Is killing bad or is it sometimes justified ? Is killing's sinful nature absolute or does it depend on the circumstances ?
According to genesis, the entire world was populated by just one man and one woman. How could that possibly happen without some serious incest going on and "god only knows" what other sexual situations must have happened.
A casual read of the bible leaves one with the impression that god has no problem with polygamy or slavery. Neither made his top ten list of thou shalt not's.
In the bible, god resorts to murder, rape, and eternal torture to punish those who have displeased him for various reasons. In the 2 Samuel story, god has a woman raped in public to punish her husband who has angered him. Is it moral to punish someone for the actions of another person ?
Likewise, The Adam and Eve story tells us that all future generations who did not commit the original "sin" must be punished for the "sin" of two people from the distant past. Is that just ?
On the other hand, the Jesus story tells us that the sins of the guilty may be absolved by punishing the innocent. So the message is, "you are guilty of a sin ?, no problem, we will punish someone else and that will take care of it". Are these really the lessons of morality to teach our children?
The fact is, there is more moral relativism in the bible than in secular society.
So, what morality does the bible provide that cannot be achieved without it ?