OK. You believe they are telling the truth, as a matter of religious faith, and do not think it's appropriate to consider that they might be lying.
NO!!! The Bible no where indicates this earth is 'young'. AND it also does not say that all peoples came from only two flesh beings. And to claim that all peoples come from only two flesh beings is 'evolution' in quick time.
BUT that is what they have been 'trained' to believe. And they are trained to believe this in opposition to the slowed process of life appearing over eons of time. Just as the Darwinist are trained to believe there is some mythical 'hot' steaming pot of primordial soup that a couple of like cells rubbed together and wahllah life began.