This article discusses research done that shows babies as young as 15 months old demonstrate knowledge of right and wrong, specifically when it comes to sharing. Now I doubt it's because their parents bring them to church or read the bible to them. I know from experience, what you teach a baby around the 1 year mark is walking and taking, image recognition, maybe coloring, stuff like that. I think this is a great issue to discuss with theists who constantly bring up morals in atheists. It's clear that morals come from family values, and now show that they are more or less instinct, like baby animals walking or hunting.