It seems to me that more bad talking points reveal themselves very frequently. I usually just dismiss them and assume that the objector knows that they are wrong. I recently realized that this is a mistake. The objector, in saying that God of the Bible has changed and is therefore imperfect, really does believe it.
They support this statement with the ethics and governing commands that God has given to different people throughout history. The inhabitants of ancient Israel were told to never touch the skin of a pig, to eat only kosher, and to fulfill capital punishment for those who have violated God's law.
While Jesus of Nazareth assured us that it is not what we put in our mouth that harms us. He eliminated the kosher laws. He undid the law of capital punishment and brought a new covenant to govern God's people. Do these two sets of ethics and legislations prove that God changed?
Obviously not. This is a talking point that internet infidels will raise to intimidate Christians who might have never endured any opposition before. However, anybody who has a brain that works, and is not a presuppositionalist knows that the conclusion "Therefore, God has changed," does not follow coherently from the premise, "God has governed the eras differently."
I think an analogy will make this more clear. A parent will give a child of five years certain rules. The child cannot leave the porch, he must be in bed by eight pm, et cetera. But years later, the same child will be given different rules by the same parents. Now, he can leave the porch, but he has to be home before midnight. Does it follow from this that the parents have changed?
Absolutely not. Different children of different ages require different rules to be properly governed. Similarly, different people of different eras requires different rules to be properly governed. It is nothing short of absurd to propose that this proves that God has changed.
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