If we are not parents and we reflect for a moment, we realize that there are some moral rules that apply equally to all human beings and the moral rule does not discriminate between different human beings. That's the kind of moral rule it is. We ought not murder, and that doesn't change whether we are adults or children. Children ought not murder other human beings, nor should adults murder other human beings. However, it is also true that there are things that are immoral for children that are not immoral for adults.
Children ought to obey adults.
Adults ought not obey children. It just doesn't work that way. So it seems clear from this illustration that there are some prerogatives that individuals have in life that changes the moral requirements of that individual. By the same token, there are some things that are true for us as being moral because they are true for God. It is wrong to lie, because God is a truthful God and He doesn't lie because there is no deceit in His nature.