Christianity, context and moral relativism.

For this argument I am not claiming that moral relativism is a good or bad thing (its all relative XD) but Christian apologists frequently claim that is an atheist/humanist concept and inferior to an absolute morality that comes from the word of God?

However, Christians also frequently claim that atheists take the actions of the Christian god out of context when we criticize his advocacy of slavery, rape, child sex abuse and genocide…