The only reason I can think of to conclude that is with an Atheist's world view there are no absolute morals. Lying being "bad" is only relative.
It seems to me that lying is always lying (my definition seems to differ from some Christians here, in that for me a lie is a
deliberate deception), but it's true that in an atheist view there are no absolute morals. Morals vary between individuals and cultures, and across time, although, of course, there are some that are almost universal - those necessary to ensure group survival.
I have never heard a description or definition of absolute morals that wasn't circular or illogical. For me, the Christian view of morals from God (absolute or otherwise) founders on the Euthyphro Dilemma:
Does God command the good because it is good, or is it good because it is commanded by God? If the former is the case, then God is commanding good based on some morality independent of God, so morality doesn't originate from God. If the latter, then what God commands is good by definition - arbitrary morality. But if, instead, morality reflects God's nature, this simply rephrases the dilemma - is God's nature the way it is because that's right/moral, or is rightness & morality defined by God's nature?
So if actions consistent with God's nature are morally right, and God's actions are consistent with his nature, then God's actions are always morally right. According to the bible, God has taken some pretty unpleasant actions - mass killing, genocide even... does this mean these actions are morally right? If you say they are moral for God but not for man, then God's nature isn't the arbiter of morality for man after all... Again - if dishonesty is wrong because it's against God's nature, why is God's nature honest? Because honesty is morally better than dishonesty? but why is that? because it is in agreement with God's nature? Circular argument.
I can't see that morality has any objective meaning in this worldview. I want morality to be rational, objective, measurable, understandable, broadly agreed; not arbitrarily commanded.
So I choose a rational humanist view of it, where morally right means promoting happiness, wellbeing, and health, and/or diminishing unnecessary harm and suffering; and morally wrong means diminishing happiness, wellbeing, and health, and/or promoting unnecessary harm and suffering.
There will always be difficult judgements and grey areas, but in the main, these definitions are clear, simple, rational, understandable, objective, and easy to apply - and most people intuitively agree with them because most people have a capacity for empathy and desire the same kinds of things; they realise that such definitions will promote a healthy, happy, flourishing, cooperative community, and most people want such a community.
Frankly, I think most Christians actually follow broadly the same moral definitions, despite their lip-service to the self-contradictory concept of absolute moral authority. I suspect that some of those who think about it in any depth find it difficult to admit because an independent, objective morality allows us to examine the morality of God's actions - and the actions of the God of the bible don't compare well against a rational morality.
But if I misrepresent the case, or I misunderstand something, or if there really is a good argument for moral absolutes or absolute morals, then I hope someone will explain.