I always point out that they don't have an objective morality either. Even if one exists, they don't know what it is. Otherwise, individual Christians would have identical morals - which they clearly do not. Put a bunch of Christians who believe they follow an absolute morality in a room and ask them a few tough moral questions. Then stand back and smile as you watch them disagree with one another.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein