Specious argument anyways.
If our rights to our lives and property aren't inherent to our being (i.e. natural), then it only follows that we only enjoy "rights" that some authority is willing to "allow" us.
Those aren't rights, they're privileges...There's a huge difference.
There is no evidence of the existence of God. We cannot presume that rights come from God because we don't know if God exists anymore than we can presume that the laws of physics exist because of the existence of God.