Well - that's what they (i.e. Christians) have done since the bible was put together. There are so many contradictions, inconsistencies and frankly: a lot of incoherrent rambling - that even they had to pick and choose. Rape, Slavery, Genocide, wholesale Slaughter of innocent people: It's according to the old testament OK and God seems to like it...
So: Those parts are in most cases (except perhaps for the extreme fundamentalists) never mentioned or referred to and most christians quickly (when asked about just those things) switch to Jesus - and how nice he was. They forget though that according to the NT Jesus also said that the OT is correct and one must not take one 'jota' off it...
So: Those parts are in most cases (except perhaps for the extreme fundamentalists) never mentioned or referred to and most christians quickly (when asked about just those things) switch to Jesus - and how nice he was. They forget though that according to the NT Jesus also said that the OT is correct and one must not take one 'jota' off it...