A learned Christian friend I have always dealt with these type of questions from those who always asked him questions in an attempt to tear apart his faith. It seems to be a trick of Satan, Satan likes people have doubt because that is where he dwells. His response: "Do you really want to know the answer?" Invariably the answer would be yes and at that point they were hooked. He then asked them, "what have you done to find out the answer?" The person would stumble. Next, he would tell them, "If you really want to know the answer, don't you suppose you should study and find out for yourself?" He would end it by saying, "You go and find out the answers yourself, if you are having trouble understanding them, then come back and I will help you, but I can't just give you the answers."